Section: Social Complexity / Transport infrastructure
Variable: Bridge (All coded records)
Talking about Transport infrastructure, bridges refers to bridges built and/or maintained by the polity (that is, code 'present' even if the polity did not build a bridge, but devotes resources to maintaining it).  
Bridge
#  Polity  Coded Value Tags Year(s) Edit Desc
1 Neguanje present Inferred Expert 800 CE 1050 CE
Some of the infrastructure seen in Pueblito/Ciudad Perdida appears from 800 CE onwards. [1]

[1]: (Giraldo 2015, personal communication)


2 Spanish Empire II present Confident Expert 1716 CE 1814 CE
“Yet, as this achievement became a reality, the definition of the ‘godly commonwealth’ itself was beginning to change, as more emphasis was put on good citizenship rather than on storming the heavens with prayer. ‘Building bridges, making roads’ is a ‘pious work’ as good as any other, commented Ponz at the end of the Old Regime, as he gave reference after reference to bishops setting up workshops, distributing spindles, wool and flax to the poor. He cited with approval the letter of the archbishop of Toledo to the priests of his diocese in 1779, urging them to take an interest in the material welfare of their parishioners.”(Casey 2002: 248) Casey, James. 2002. Early Modern Spain: A Social History. New York: Routledge. https://www.zotero.org/groups/seshat_databank/items/itemKey/2SNTRSWT
3 Soviet Union present Confident Expert 1923 CE 1991 CE
The Soviet Union invested heavily in its road infrastructure, especially during the post-World War II era, to facilitate industrial growth, military movement, and improve connectivity across its vast territory.
The economic centralization of the late 1920s and 1930s led to massive and rapid infrastructure development.
[1] [2]


Examples: Merefa-Kherson bridge, Bolshoy Kamenny Bridge, Saratov Bridge

[1]: R. W. Davies, Mark Harrison, and S. G. Wheatcroft, eds., The Economic Transformation of the Soviet Union, 1913-1945 (Cambridge ; New York: Cambridge University Press, 1994). Zotero link: SQIKYBTN

[2]: Шафиркин, Б. И. Единая Транспортная Система СССР и Взаимодействие Различных Видов Транспорта. Москва Высшая школа, 1983. Zotero link: 6MTCGJDC


4 Macedonian Empire present Inferred -
-
5 Grand Principality of Moscow, Rurikid Dynasty present Confident -
-
6 Kievan Rus present Inferred -
-
7 Avar Khaganate unknown Suspected -
-
8 Bagan present Confident -
-
9 Banu Ghaniya unknown Suspected -
-
10 Chu Kingdom - Spring and Autumn Period present Inferred -
-
11 Duchy of Aquitaine I present Confident -
-
12 Kangju unknown Suspected -
-
13 Kazan Khanate present Inferred -
-
14 Kingdom of Congo unknown Suspected -
-
15 Kingdom of Georgia II present Confident -
-
16 Kingdom of Sicily - Hohenstaufen and Angevin dynasties present Confident -
-
17 Malacca Sultanate unknown Suspected -
-
18 Mauretania unknown Suspected -
-
19 Monte Alban V Early Postclassic absent Inferred -
-
20 Monte Alban V Late Postclassic absent Inferred -
-
21 Novgorod Land present Confident -
-
22 Numidia unknown Suspected -
-
23 Ottoman Empire Late Period absent Confident -
-
24 Russian Principate present Confident -
-
25 Sharqi present Confident -
-
26 Songhai Empire unknown Confident -
-
27 Third Scythian Kingdom unknown Suspected -
-
28 Xixia present Confident -
-
29 Yueban unknown Suspected -
-
30 Zagwe unknown Suspected -
-
31 * Norman England present Confident -
- Example: London Bridge, though originally of Roman origin, was maintained and rebuilt during the Norman period. [Chibnall 1996] EDIT
32 Cahokia - Emergent Mississippian I absent Confident Expert -
There were no bridges in prehistoric North America.
33 Greco-Bactrian Kingdom unknown Suspected Expert -
-
34 Hephthalites unknown Suspected Expert -
-
35 Kushan Empire unknown Suspected Expert -
-
36 Western Jin present Inferred Expert -
-
37 Hmong - Late Qing present Inferred Expert -
-
38 Tang Dynasty I present Inferred Expert -
-
39 Tang Dynasty II present Confident Expert -
-
40 Great Yuan present Confident Expert -
-
41 Badarian absent Inferred Expert -
-
42 Egypt - Inter-Occupation Period present Inferred Expert -
-
43 Naqada I absent Inferred Expert -
-
44 Naqada II absent Inferred Expert -
-
45 Sogdiana - City-States Period present Confident Expert -
"It was in the name of the com- munity that the town could rent out certain properties, such as the bridge at Panjikent, the toll of which was entrusted to two persons, on condition that they pay 150 silver drachms in advance for the annual receipts." [1]

[1]: (De la Vaissière 2005, 168)


46 Rasulid Dynasty present Confident Expert -
There was a Rasulid bridge at Damt. [1]

[1]: (Lamprakos 2016) Michele Lamprakos. 2016. Building a World Heritage City: Sanaa, Yemen. Routledge.


47 Yemen - Tahirid Dynasty present Inferred Expert -
This is based on the codes for the Rasulids as ’Sultan ’Amir also appears to have been emulating the high period of Rasulid power a hundred years earlier’ [1] . There was a Rasulid bridge at Damt. [2]

[1]: Porter, Venetia Ann (1992) The history and monuments of the Tahirid dynasty of the Yemen 858-923/1454-1517, Durham theses, Durham University, p. 4 Available at Durham E-Theses Online: http://etheses.dur.ac.uk/5867/

[2]: (Lamprakos 2016) Michele Lamprakos. 2016. Building a World Heritage City: Sanaa, Yemen. Routledge.


48 Egypt - Dynasty 0 absent Inferred Expert -
-
49 Ptolemaic Kingdom I present Inferred Expert -
-
50 Ptolemaic Kingdom II present Inferred Expert -
-
51 Egypt - Tulunid-Ikhshidid Period present Confident Expert -
-
52 Beaker Culture unknown Suspected Expert -
-
53 French Kingdom - Early Bourbon unknown Suspected Expert -
-
54 Carolingian Empire I unknown Suspected Expert -
-
55 Durrani Empire absent Confident Expert -
-
56 Austria - Habsburg Dynasty I present Confident -
Bridges were present, built and maintained throughout the period. [1]

[1]: (Curtis 2013: 48) Curtis, Benjamin. 2013. The Habsburgs: The History of a Dynasty. London; New York: Bloomsbury. https://www.zotero.org/groups/1051264/seshat_databank/items/TRKUBP92


57 Golden Horde present Confident -
There were manned river crossing stations in the territory. [1]

[1]: Schamiloglu 2018: 21. https://www.zotero.org/groups/1051264/seshat_databank/items/4DIB5VCX


58 Napoleonic France present Confident -
Bridges were built and maintained across France. [1]

[1]: Clapham 1955: 147-150. https://www.zotero.org/groups/1051264/seshat_databank/items/2QKQJQM3.


59 Hallstatt A-B1 unknown Suspected Expert -
-
60 Hallstatt C unknown Suspected Expert -
-
61 Hallstatt D unknown Suspected Expert -
-
62 La Tene A-B1 unknown Suspected Expert -
-
63 Akan - Pre-Ashanti absent Confident Expert -
-
64 Ashanti Empire absent Confident Expert -
-
65 Archaic Crete present Confident Expert -
-
66 Classical Crete present Confident Expert -
-
67 The Emirate of Crete present Confident Expert -
-
68 Final Postpalatial Crete present Confident Expert -
-
69 Geometric Crete present Confident Expert -
-
70 Hellenistic Crete present Confident Expert -
-
71 Monopalatial Crete present Confident Expert -
-
72 New Palace Crete present Confident Expert -
-
73 Old Palace Crete unknown Suspected Expert -
-
74 Postpalatial Crete present Confident Expert -
-
75 Prepalatial Crete unknown Suspected Expert -
-
76 Hawaii I unknown Suspected Expert -
-
77 Hawaii II absent Inferred Expert -
-
78 Hawaii III unknown Suspected Expert -
-
79 Iban - Pre-Brooke absent Confident Expert -
-
80 Iban - Brooke Raj and Colonial absent Confident Expert -
-
81 Majapahit Kingdom unknown Suspected Expert -
-
82 Tocharians unknown Suspected Expert -
Possibly bridges over the Zarastran but unsure.
83 Hmong - Early Chinese present Confident Expert -
Chinese anthropologists report a variety of bridges in the area: ’Bridges. - The bridge in the Miao area involve considerable construction work. On important communication roads, they generally built three or five-arch bridges (Illus. 11) on which were built houses for hotels and restaurants for the convenience of travelers. Places where a river is wide and shallow are spanned by long bridges (Illus. 22, 23). Places where a river is wide and deep are crossed by rope bridges (Illus. 24). In small streams which are narrow and have sandbanks they sat up stone steps, customarily called ho shui ch’iao /“bridge enclosing the water”/ (Illus. 25), or they build small bridges (Illus. 26) over them.’ [1] Some mission stations devised bridge construction schemes: ’The mountain community of Shimenkan (Stone Gateway) in northwestern Guizhou served as the headquarters of church activity. In addition to its own large primary school, it offered secondary schooling and teacher training. At least thirty Hua Miao continued on and graduated from university in the decades before 1949. Some of these became ordained Methodist ministers or doctors and one became a well-regarded anthropologist (Yang Hanxian). Generally the local chapels were served by lay preachers who were trained at Shimenkan. Other young people received training as nurses and agricultural extension workers. At various points in time, agricultural and industrial extension programs were held at Shimenkan. New strains of potatoes were introduced, fruit orchards were planted on the hillsides of many villages, vegetable gardens were encouraged, and a number of Miao learned the techniques of carpentry, brickmaking, and masonry. More efficient looms were designed for home production of cloth. During the prerevolutionary decades, some villages benefited from collective endeavors to build bridges and roads, and pipe systems that brought water into the community. Teams of medical workers, from Shimenkan or from the churchaffiliated hospitals in nearby Zhaotong City, traveled around the area periodically. Even those who were not interested in becoming church members participated in the economic innovations, accepted treatment from the medical workers, and sent their children to the schools.’ [2]

[1]: Ling, Shun-sheng, Yifu Ruey, and Lien-en Tsao 1947. “Report On An Investigation Of The Miao Of Western Hunan”, 71

[2]: Diamond, Norma 1993. “Ethnicity And The State: The Hua Miao Of Southwest China”, 68


84 Jin Dynasty present Confident Expert -
e.g. Marco Polo Bridge
85 Great Ming present Confident Expert -
e.g. five bridges of the Meridian Gate across the Golden Water River [1]

[1]: (Tsai 1996, p.35)


86 Northern Wei present Confident Expert -
Constructed by Monasteries [1]

[1]: (Bol, Peter. North China Workshop 2016)


87 Sui Dynasty present Confident Expert -
Army engineers constructed pontoon bridges to cross the Liao River in 612 CE. [1]

[1]: (Xiong 2006, 56)


88 Western Han Empire present Confident Expert -
[1]

[1]: (Keay 2009, 146)


89 Yangshao unknown Suspected Expert -
Unknown. Wooden bridges?
90 Shuar - Colonial present Confident Expert -
According to SCCS variable 14 ’Routes of Land Transport’ only ‘1’ or ’unimproved trails’ were used for land transport, not roads. Rivers were negotiated by canoe or raft: ’The most important means of transportation along the upper Marañón and its tributaries is the canoe (Fig. 8). One could even say that this dug-out is the only means of transportation since there are only a few isolated overland paths.’ [1] ’The canoe appears in several sizes. Some accomodate only one to two people, others up to twenty men. All of them are made of cedar wood. Whether small or large, they all have the same shape. The part that touches the water is round in cross-section just as the original tree. At both ends flat seats for the oarsman were provided when the canoe was dug out. The canoe is directed by means of paddles, but on upstream voyages long bamboo poles (tanganas) are required, and with their help the boat is pushed forward. Should the river bank be flat, some Indians may jump into the water to pull the canoe with the help of lianas.’ [1] ’Another means of transportation in the river area is the raft (balsa). It can be used for downstream voyages only and is therefore not so frequent. It is made by uniting several balsa trunks. The rafts are kept within the current by means of paddles.’ [1] The Shuar crossed even broad rivers swimming: ’“The Jibaros, when they are about to cross a broad river swimming, are in the habit of swallowing a fish-sound before they enter the water. In this way, they believe, they will be able to float on the water and swim as easily as a fish.’ [2] Reiss also reports liana bridges: ’The six or seven houses which make up the village of Paira (1,617 meters) lie two short days of travel farther down in the valley. The foot of the steep mountains has been reached here; only elongated hills continue to the east. The rivers, still rapid, to be sure, become broad and even navigable for short stretches; an immense forest area stretches out before one’s eyes. Up to here we found the brooks, which were difficult to cross, bridged over, although the liana bridges, serving as a model for our suspension bridges, sometimes offered crossings which appeared dangerous. Farther down, however, the rivers had to be waded, for the Jesuits, in order to make access to their mission more difficult, had pulled down the bridges formerly present and had taken the canoes used for ferrying into Mácas into their own custody.’ [3]

[1]: Brüning, Hans H. 1928. “Travelling In The Aguaruna Region”, 74

[2]: Karsten, Rafael 1935. “Head-Hunters Of Western Amazonas: The Life And Culture Of The Jibaro Indians Of Eastern Ecuador And Peru”, 453p

[3]: Reiss, W. (Wilhelm) 1880. “Visit Among The Jivaro Indians", 6


91 Shuar - Ecuadorian present Confident Expert -
According to SCCS variable 14 ’Routes of Land Transport’ only ‘1’ or ’unimproved trails’ were used for land transport, not roads. Rivers were negotiated by canoe or raft: ’The most important means of transportation along the upper Marañón and its tributaries is the canoe (Fig. 8). One could even say that this dug-out is the only means of transportation since there are only a few isolated overland paths.’ [1] ’The canoe appears in several sizes. Some accomodate only one to two people, others up to twenty men. All of them are made of cedar wood. Whether small or large, they all have the same shape. The part that touches the water is round in cross-section just as the original tree. At both ends flat seats for the oarsman were provided when the canoe was dug out. The canoe is directed by means of paddles, but on upstream voyages long bamboo poles (tanganas) are required, and with their help the boat is pushed forward. Should the river bank be flat, some Indians may jump into the water to pull the canoe with the help of lianas.’ [1] ’Another means of transportation in the river area is the raft (balsa). It can be used for downstream voyages only and is therefore not so frequent. It is made by uniting several balsa trunks. The rafts are kept within the current by means of paddles.’ [1] The Shuar crossed even broad rivers swimming: ’“The Jibaros, when they are about to cross a broad river swimming, are in the habit of swallowing a fish-sound before they enter the water. In this way, they believe, they will be able to float on the water and swim as easily as a fish.’ [2] Reiss also reports liana bridges: ’The six or seven houses which make up the village of Paira (1,617 meters) lie two short days of travel farther down in the valley. The foot of the steep mountains has been reached here; only elongated hills continue to the east. The rivers, still rapid, to be sure, become broad and even navigable for short stretches; an immense forest area stretches out before one’s eyes. Up to here we found the brooks, which were difficult to cross, bridged over, although the liana bridges, serving as a model for our suspension bridges, sometimes offered crossings which appeared dangerous. Farther down, however, the rivers had to be waded, for the Jesuits, in order to make access to their mission more difficult, had pulled down the bridges formerly present and had taken the canoes used for ferrying into Mácas into their own custody.’ [3]

[1]: Brüning, Hans H. 1928. “Travelling In The Aguaruna Region”, 74

[2]: Karsten, Rafael 1935. “Head-Hunters Of Western Amazonas: The Life And Culture Of The Jibaro Indians Of Eastern Ecuador And Peru”, 453p

[3]: Reiss, W. (Wilhelm) 1880. “Visit Among The Jivaro Indians", 6


92 Egypt - Middle Kingdom present Inferred Expert -
Earliest reference to small bridge is for the new kingdom. Bridges over wide expanse of water unknown. [1] However, it is highly probable that small bridges were necessary before this time and Egyptians would have been more than capable of building and maintaining them.

[1]: (Arnold 2003, 37)


93 Egypt - New Kingdom Thutmosid Period present Confident Expert -
Bridges over wide expanse of water unknown. Small bridges were built. A bridge at Amarna linked two parts of a royal palace that was separated by a Royal Road. It was supported by two pillars 5 meters apart. [1]

[1]: (Arnold 2003, 37)


94 Egypt - Saite Period present Inferred Expert -
small bridges known in ancient times. likely had small wooden bridges if no large or stone bridges.
95 Egypt - Thebes-Libyan Period present Inferred Expert -
Present in Ramesside period.
96 Atlantic Complex unknown Suspected Expert -
No information found in sources so far.
97 French Kingdom - Late Bourbon present Confident Expert -
[1]

[1]: (Ladurie 1991, 153, 306)


98 Proto-French Kingdom present Confident Expert -
Beginning in the 11th century. [1] Polity funded/owned?

[1]: (Boyer 1995, 1748-1751)


99 French Kingdom - Late Capetian present Confident Expert -
Bridge built over Saone at St-Jean-de-Losne. [1] Bridge of St. Laurent at Macon. [2] Bridge at Avignon 1177 CE over Rhone funded by alms givers. [3]

[1]: (Spufford 2006, 155)

[2]: (Spufford 2006, 164)

[3]: (Spufford 2006, 169)


100 La Tene B2-C1 present Confident Expert -
Lake Neuchatel trade-related bridge found, carbon-dated 251 BCE [1] Another bridge at found at Cornaux. [1]

[1]: (Kruta 2004, 25)


101 La Tene C2-D present Confident Expert -
Lake Neuchatel trade-related bridge found, carbon-dated 251 BCE [1] Another bridge at found at Cornaux. [1]

[1]: (Kruta 2004, 25)


102 British Empire II present Confident Expert -
Isambard Kingdom Brunel engineered many bridges.
103 Mataram Sultanate present Confident Expert -
By the mid-seventeeenth century there were permanent bridges. [1]

[1]: (Ricklefs 1993, 92)


104 Deccan - Neolithic unknown Suspected Expert -
-
105 Hoysala Kingdom unknown Suspected Expert -
-
106 Abbasid Caliphate II present Inferred Expert -
-
107 Neo-Assyrian Empire present Confident Expert -
-
108 Ubaid unknown Suspected Expert -
-
109 Ur - Dynasty III unknown Suspected Expert -
-
110 Uruk unknown Suspected Expert -
-
111 Susiana - Muhammad Jaffar unknown Suspected Expert -
-
112 Formative Period unknown Suspected Expert -
-
113 Susiana B unknown Suspected Expert -
-
114 Susiana - Late Ubaid unknown Suspected Expert -
-
115 Susiana - Early Ubaid unknown Suspected Expert -
-
116 Elam - Kidinuid Period unknown Suspected Expert -
-
117 Pre-Ceramic Period unknown Suspected Expert -
-
118 Seleucids unknown Suspected Expert -
-
119 Susa I unknown Suspected Expert -
-
120 Papal States - Early Modern Period I present Confident Expert -
-
121 Papal States - Early Modern Period II present Confident Expert -
-
122 Exarchate of Ravenna present Confident Expert -
-
123 Western Roman Empire - Late Antiquity present Confident Expert -
-
124 Andronovo unknown Suspected Expert -
-
125 Saadi Sultanate unknown Suspected Expert -
-
126 Jenne-jeno I unknown Suspected Expert -
-
127 Jenne-jeno II unknown Suspected Expert -
-
128 Jenne-jeno III unknown Suspected Expert -
-
129 Jenne-jeno IV unknown Suspected Expert -
-
130 Mali Empire unknown Suspected Expert -
-
131 Songhai Empire - Askiya Dynasty unknown Suspected Expert -
-
132 Yisrael absent Inferred Expert -
Probably absent according to Dorsey. [1]

[1]: Dorsey (1991).


133 Kampili Kingdom unknown Suspected Expert -
Likely had the ability to construct bridges.
134 Magadha - Maurya Empire present Inferred Expert -
The Royal road must have crossed some streams or rivers and required bridge-building.
135 Vijayanagara Empire present Confident Expert -
[1]

[1]: Burton Stein, The New Cambridge History of India: Vijayanagara (1990), p. 34


136 Isin-Larsa present Inferred Expert -
"Routes were often dictated by the location of oases, mountain passes, and river crossings, by bridge, ford, or ferry."EXTERNAL_INLINE_REFERENCE: ;(McIntosh 2005: 139) McIntosh, J. 2005. Ancient Mesopotamia: New Perspective. Santa Barbara: ABC Clio. Seshat URL: EXTERNAL_INLINE_LINK: https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/KK2E3KMD .;
137 Ilkhanate present Confident Expert -
It is not stated in the sources that the Ilkhans destroyed all the bridges in Persia and this would be unlikely due to the importance of bridges to trade. Ghazan tried to improve security on the roads [1] and may have built or maintained bridges.

[1]: (Morgan 2015, 75) Morgan, David. 2015. Medieval Persia 1040-1797. Routledge.


138 Elam III present Inferred Expert -
"Other major administrative achievements of the Elamites included ... the construction and maintenance of numerous public works and enterprises, such as roads, bridges, cities and towns, communication centers, and economic and commercial centers" [1]

[1]: (Farazmand 2009, 22) Farazmand, Ali. 2009. Bureaucracy and Administration. CRC Press. Boca Raton.


139 Safavid Empire present Confident Expert -
e.g. Khaju Bridge built by Shah ʿAbbās II over the Zayanderud at Isfahan [1]

[1]: Rudi Matthee ‘SAFAVID DYNASTY’http://www.iranicaonline.org/articles/safavids


140 Icelandic Commonwealth absent Confident Expert -
’Maintaining bridges (and also ferries) was the duty of the neighbouring farmer, not the state.’ [1]

[1]: Árni Daniel Júlíusson and Axel Kristissen 2017, pers. comm. to E. Brandl and D. Mullins


141 Latium - Bronze Age absent Confident Expert -
The first bridge thought to be the Pons Sublicius possibly in built 642 BCE under Ancus Marcius.
142 Latium - Copper Age absent Confident Expert -
The first bridge thought to be the Pons Sublicius possibly in built 642 BCE under Ancus Marcius.
143 Rome - Republic of St Peter II present Confident Expert -
The popes maintained bridges across the Tiber; in other cities, such as Ravenna, the local bishops or secular officials did the same.
144 Early Roman Republic present Confident Expert -
The first bridge thought to be the Pons Sublicius possibly in built 642 BCE under Ancus Marcius.
145 Roman Kingdom present Confident Expert -
The first bridge thought to be the Pons Sublicius possibly in built 642 BCE under Ancus Marcius.
146 Republic of St Peter I present Confident Expert -
Papal revenue was spent on maintenance. [1]

[1]: (Woods 1921, 47)


147 Asuka present Confident Expert -
[1]

[1]: Brown, D., 1993.The Cambridge History of Japan, vol. 2.Cambridge: Cambridge University Press, 250.


148 Japan - Azuchi-Momoyama present Confident Expert -
‘the construction by Hideyoshi of a large-scale bridge across the Kamo River.’ [1]

[1]: Kirby, John. 1962. From Castle to Teahouse: Japanese Architecture of the Momoyama Period. Tuttle Publishing.


149 Nara Kingdom present Confident Expert -
[1]

[1]: Brown, Delmer M. 1993. The Cambridge History of Japan Volume 1: Ancient Japan. Cambridge Histories Online © Cambridge University Press.p.250


150 Western Turk Khaganate present Inferred Expert -
"The Türk state aspired to make the roads safe and gave its backing to the Sogdian diplomats’ trade negotiations." [1]

[1]: (Marshak 1996, 242)


151 Funan I present Inferred Expert -
Stone bridges date to classical Angkor, but it is likely that bridges were made using wood. As Hendrickson points out: The Phnom Sres (1022 CE) inscription found in the Battambang region makes reference to the construction of reservoirs along roads and a wooden bridge across a river (Jacques 1968:616-617). [1]

[1]: (Hendrickson 2007, p. 123)


152 Phoenician Empire absent Inferred Expert -
Bridges were absent in neighboring Iron-Age Israel. [1]

[1]: Dorsey (1991).


153 Eastern Turk Khaganate unknown Suspected Expert -
-
154 Cahokia - Sand Prairie absent Confident Expert -
There were no bridges in prehistoric North America.
155 Oneota absent Confident Expert -
Inference approved by Peter Peregrine.
156 Early Mongols absent Confident Expert -
-
157 Chagatai Khanate present Inferred Expert -
Present in Mongolian Empire.
158 Second Turk Khaganate unknown Suspected Expert -
-
159 Uigur Khaganate unknown Suspected Expert -
-
160 Xianbei Confederation unknown Suspected Expert -
-
161 Late Xiongnu unknown Suspected Expert -
-
162 Xiongnu Imperial Confederation unknown Suspected Expert -
-
163 Zungharian Empire unknown Suspected Expert -
-
164 Later Wagadu Empire unknown Suspected Expert -
-
165 Middle Wagadu Empire unknown Suspected Expert -
-
166 Timurid Empire present Confident Expert -
Ulugh Beg built a bridge across the Oxus. [1]

[1]: (Manz 2007, 263) Manz, Beatrice Forbes. 2007. Power, Politics and Religion in Timurid Iran. Cambridge University Press. Cambridge.


167 Cuzco - Early Intermediate II unknown Suspected Expert -
-
168 Cuzco - Late Formative unknown Suspected Expert -
-
169 Kachi Plain - Aceramic Neolithic unknown Suspected Expert -
-
170 Kachi Plain - Ceramic Neolithic unknown Suspected Expert -
-
171 Kachi Plain - Chalcolithic unknown Suspected Expert -
-
172 Kachi Plain - Post-Urban Period present Inferred Expert -
-
173 Kachi Plain - Pre-Urban Period unknown Suspected Expert -
-
174 Kachi Plain - Urban Period I unknown Suspected Expert -
-
175 Kachi Plain - Urban Period II unknown Suspected Expert -
-
176 Sarazm unknown Suspected Expert -
-
177 Konya Plain - Early Chalcolithic absent Inferred Expert -
-
178 Konya Plain - Late Chalcolithic absent Inferred Expert -
-
179 East Roman Empire present Confident Expert -
-
180 Lysimachus Kingdom present Inferred Expert -
-
181 Konya Plain - Ceramic Neolithic absent Confident Expert -
-
182 Konya Plain - Late Neolithic absent Confident Expert -
-
183 Kingdom of Hawaii - Kamehameha Period unknown Suspected Expert -
-
184 Koktepe I unknown Suspected Expert -
-
185 Himyar I unknown Suspected Expert -
-
186 Himyar II unknown Suspected Expert -
-
187 Yemen - Qasimid Dynasty unknown Suspected Expert -
-
188 Early Xiongnu absent Inferred Expert -
Not enough data, though it seems to reasonable infer absence.
189 Monte Alban IIIB and IV absent Inferred Expert -
Sources do not suggest there is evidence for bridges in prehispanic Valley of Oaxaca. [1]

[1]: Marcus and Flannery (1996) Zapotec Civilization: How urban society evolved in Mexico’s Oaxaca Valley. Flannery and Marcus (1983) The Cloud People: divergent evolution of the Zapotec and Mixtec civilizations. Museum of Anthropology, University of Michigan, Ann Arbor. Academic Press, New York.


190 Oaxaca - Rosario absent Inferred Expert -
Sources do not suggest there is evidence for the construction of bridges during this period. [1]

[1]: Marcus and Flannery (1996) Zapotec Civilization: How urban society evolved in Mexico’s Oaxaca Valley. Flannery and Marcus (1983) The Cloud People: divergent evolution of the Zapotec and Mixtec civilizations. Museum of Anthropology, University of Michigan, Ann Arbor. Academic Press, New York.


191 Kingdom of Norway II absent Confident Expert -
There were a few bridges, but these were not polity owned. [1]

[1]: Árni Daniel Júlíusson and Axel Kristissen 2017, pers. comm. to E. Brandl and D. Mullins


192 Sakha - Early absent Confident Expert -
Built-up transport infrastructure was introduced in the early Russian period (see next sheet).
193 Egypt - Kushite Period present Inferred Expert -
Small bridges existed in Ramesside Egypt. [1]

[1]: (Arnold 2003, 37)


194 Ayutthaya present Confident Expert -
195 Fatimid Caliphate present Confident Expert -
Great Bridge. [1]

[1]: (Raymond 2000, 48)


196 Middle Bronze Age in Central Anatolia present Confident Expert -
[1]

[1]: Barjamovic G. 2011. A Historical Geography of Anatolia in the Old Assyrian Colony Period. Copenhagen: Museum Tusculanum Press, pg. 396


197 Hatti - New Kingdom present Confident Expert -
The Citadel Büyükkale at Hattusa was connected to a system of stone viaducts and bridge with the Büyükkaya [1] Which period does this refer to?

[1]: Makowski M. (2009) Świat późnej epoki brązu. pp.157 [In:] A. Smogorzewska (ed.) Archeologia starożytnego Bliskiego Wschodu, Warszawa: Instytut Archeologii UW, pp. 151-187)


198 Neo-Hittite Kingdoms present Inferred Expert -
inherited and still maintained?
199 Ottoman Empire I present Confident Expert -
Bridge building. [1]

[1]: (Lapidus 2012, 449)


200 Ottoman Empire II present Confident Expert -
Bridge building. [1]

[1]: (Lapidus 2012, 449)


201 Roman Empire - Dominate present Confident Expert -
Bridges present from earlier periods and maintained during Roman Dominate.
202 Rum Sultanate present Confident Expert -
Bridges "are best regarded as public works" and initially financed by the State.
203 Cahokia - Moorehead absent Confident Expert -
There were no bridges in prehistoric North America.
204 Haudenosaunee Confederacy - Late absent Confident Expert -
Morgan describes the system of trails used by the Iroquois, but fails to mention bridges and other more permanent structures: ’The principal villages of the Iroquois, in the days of aboriginal dominion, were connected by well-beaten trails. These villages were so situated that the central trail, which started from the Hudson at the site of Albany, passed through those of the Mohawks and Oneidas; and, crossing the Onondaga valley and the Cayuga country, a few miles north of the chief settlements of these nations, it passed through the most prominent villages of the Senecas, in its route to the valley of the Genesee. After crossing this celebrated valley, it proceeded westward to lake Erie, coming out upon it at the mouth of Buffalo creek, on the present site of Buffalo.’ [1] ’We have thus followed the great Indian trail, Wä-a-gwen[unknown] -ne-yu, through the State, from the Hudson to lake Erie; noticing, as far as ascertained, the principal stopping-places on the route. To convey an adequate impression of the forest scenery, which then overspread the land, is beyond the power of description. This trail was traced through the over-hanging forest for almost its entire length. In the trail itself, there was nothing particularly remarkable. It was usually from twelve to eighteen inches wide, and deeply worn in the ground; varying in this respect from three to six, and even twelve inches, depending upon the firmness of the soil. The large trees on each side were frequently marked with the hatchet. This well-beaten footpath, which no runner, nor band of warriors could mistake, had doubtless been trodden by successive generations from century to century. It had, without question, been handed down from race to race, as the natural line of travel, geographically considered, between the Hudson and lake Erie. While it is scarcely possible to ascertain a more direct route than the one pursued by this trail, the accuracy with which it was traced from point to point, to save distance, is extremely surprising. It proved, on the survey of the country, to have been so judiciously selected that the turnpike was laid out mainly on the line of this trail, from one extremity of the State to the other. In addition to this, all the larger cities and villages west of the Hudson, with one or two exceptions, have been located upon it. As an independent cause, this forest highway of the Iroquois doubtless determined the establishment of a number of settlements, which have since grown up into cities and villages.’ [2] We are unsure about the infrastructural changes brought about by white settlers in the area.

[1]: Morgan, Lewis Henry, and Herbert M. Lloyd 1901. “League Of The Ho-De’-No-Sau-Nee Or Iroquois. Vol. Ii”, 80

[2]: Morgan, Lewis Henry, and Herbert M. Lloyd 1901. “League Of The Ho-De’-No-Sau-Nee Or Iroquois. Vol. Ii”, 94


205 Cahokia - Early Woodland absent Confident Expert -
There were no bridges in prehistoric North America.
206 Cahokia - Emergent Mississippian II absent Confident Expert -
There were no bridges in prehistoric North America.
207 Cahokia - Middle Woodland absent Confident Expert -
There were no bridges in prehistoric North America.
208 Cahokia - Late Woodland III absent Confident Expert -
There were no bridges in prehistoric North America.
209 Ghur Principality present Confident Expert -
Baked-brick bridge. [1]

[1]: Thomas, David. Firuzkuh: the summer capital of the Ghurids http://www.academia.edu/188837/Firuzkuh_the_summer_capital_of_the_Ghurids


210 Kidarite Kingdom present Inferred Expert -
Across the waterways in Bactria.
211 Eastern Han Empire present Confident Expert -
Commandery governers had bureaus that dealt with bridges. [1]

[1]: (Bielenstein 1986, 508)


212 Jin present Inferred Expert -
"As early as the Shang period, roads were controlled by a special official, and in the Zhou period, traffic had reached such proportions that regulations were introduced for particularly crowded crossroads and reckless driving was prohibited." [1] Must have been stone or wooden bridges over rivers and streams.

[1]: (Lindqvist 2009) Lindqvist, Cecilia. 2009. China: Empire of Living Symbols. Da Capo Press.


213 Northern Song present Confident Expert -
"Most of the prefectural armies did not receive military training; they were merely involved in wall and road repair, river dike building, bridge construction, transportation, and other types of hard labor." [1]

[1]: (Tseng-yü and Wright 2009, 218)


214 Papal States - High Medieval Period present Confident Expert -
The popes maintained bridges across the Tiber; in other cities, such as Ravenna, the local bishops or secular officials did the same.
215 Early Qing present Confident Expert -
During the early Qing, the development of Hangzhou involved the digging and dredging of rivers in the city as well as the river outside Zhangyang Gate, the river from Mija Bridge to Guojun Bridge, the river from Jionglong Bridge to Zhongguan Bridge, the river from Houchou Watergate to Guojun Bridge, and up to the river from Pocang Bridge to Gonguandong Bridge. This project led to an expansion of the rivers which had become clean and clear, flowing smoothly, allowing an increase in boat traffic. [1]

[1]: (Fu and Cao 2019, p.329)


216 Late Qing present Confident Expert -
e.g. Yongqing Bridge and Santiao Bridge [1] The Board of Works was responsible for maintaining all official buildings, granaries, official communication routes, dykes, dams, and irrigation systems. [2]

[1]: (Wang 2016, 212, 218)

[2]: (Smith 2015, 103)


217 Late Shang present Inferred Expert -
"As early as the Shang period, roads were controlled by a special official" [1] Must have been at least some small wooden or stone bridges over rivers and streams.

[1]: (Lindqvist 2009) Lindqvist, Cecilia. 2009. China: Empire of Living Symbols. Da Capo Press.


218 Western Zhou present Inferred Expert -
"As early as the Shang period, roads were controlled by a special official, and in the Zhou period, traffic had reached such proportions that regulations were introduced for particularly crowded crossroads and reckless driving was prohibited." [1] Must have been stone or wooden bridges over rivers and streams.

[1]: (Lindqvist 2009) Lindqvist, Cecilia. 2009. China: Empire of Living Symbols. Da Capo Press.


219 Tairona present Confident Expert -
"To facilitate the redistribution of products the different regional chiefdoms of the northeast SNSM built an extensive network of paths, bridges, and paved stairs." [1] SNSM is Sierra Nevada de Santa Marta.

[1]: (Oyuela-Caycedo 2008, 423)


220 Ayyubid Sultanate present Confident Expert -
Communications with al-Maqs were improved by the building of roads in 1177 and the Muski Bridge over the Khalij prior to 1188 CE. [1] A bridge was built between the Rawdah Island and Fustat around 1240 CE. [2] "Saladin put a great deal of investment into roads, bridges and fortified khans." [3]

[1]: (Raymond 2001, 97)

[2]: (Raymond 2001, 101)

[3]: (Nicolle 2011) Nicolle, D. 2011. Saladin. Osprey Publishing.


221 Egypt - Dynasty I present Inferred Expert -
Earliest reference to small bridge is for the new kingdom. Bridges over wide expanse of water unknown. [1] However, it is highly probable that small bridges were necessary before this time and Egyptians would have been more than capable of building and maintaining them.

[1]: (Arnold 2003, 37)


222 Egypt - Dynasty II present Inferred Expert -
Earliest reference to small bridge is for the new kingdom. Bridges over wide expanse of water unknown. [1] However, it is highly probable that small bridges were necessary before this time and Egyptians would have been more than capable of building and maintaining them.

[1]: (Arnold 2003, 37)


223 Egypt - Mamluk Sultanate I present Confident Expert -
Bridge over Abu’l Managga irrigation canal. [1] "In a traditional society that lacked the concept of public or municipal agencies, as individuals, the members of this ruling class assumed responsibility for what we would consider public concerns. The mamluks were patrons of art, schools, and mosques; builders of roads, bridges, and markets; and overseers of "public works," morality, and charity." [2] Seven bridges constructed over al-Nasiri canal between 1325 and 1376 CE. [3]

[1]: (Nicolle 2014) Nicolle, D. 2014 Mamluk Askar 1250-1517. Osprey Publishing Ltd.

[2]: (Dols 1977, 152)

[3]: (Raymond 2000, 125)


224 Egypt - Mamluk Sultanate III present Confident Expert -
Bridges "maintained right up until the end of Mamluk rule". [1] Bridge over Abu’l Managga irrigation canal. [2] "In a traditional society that lacked the concept of public or municipal agencies, as individuals, the members of this ruling class assumed responsibility for what we would consider public concerns. The mamluks were patrons of art, schools, and mosques; builders of roads, bridges, and markets; and overseers of "public works," morality, and charity." [3]

[1]: (Oliver and Atmore 2001, 21) Oliver R and Atmore A. 2001. Medieval Africa 1250-1800. Cambridge University Press. Cambridge.

[2]: (Nicolle 2014) Nicolle, D. 2014 Mamluk Askar 1250-1517. Osprey Publishing Ltd.

[3]: (Dols 1977, 152)


225 Egypt - Mamluk Sultanate II present Confident Expert -
Seven bridges constructed over al-Nasiri canal between 1325 and 1376 CE. [1] "In a traditional society that lacked the concept of public or municipal agencies, as individuals, the members of this ruling class assumed responsibility for what we would consider public concerns. The mamluks were patrons of art, schools, and mosques; builders of roads, bridges, and markets; and overseers of "public works," morality, and charity." [2]

[1]: (Raymond 2000, 125)

[2]: (Dols 1977, 152)


226 Egypt - New Kingdom Ramesside Period present Confident Expert -
Bridges over wide expanse of water unknown. Small bridges were built. A bridge at Amarna linked two parts of a royal palace that was separated by a Royal Road. It was supported by two pillars 5 meters apart. [1]

[1]: (Arnold 2003, 37)


227 Egypt - Classic Old Kingdom present Inferred Expert -
Earliest reference to small bridge is for the new kingdom. Bridges over wide expanse of water unknown. [1] However, it is highly probable that small bridges were necessary before this time and Egyptians would have been more than capable of building and maintaining them.

[1]: (Arnold 2003, 37)


228 Dambadaneiya present Confident -
"Parakramabahu II had devoted attention to this region when his minister Devapatiraga founded Viharas and improved the lines of communications by the construction of bridges across the streams, on behalf of the pilgrims to Samantakuta." THESIS
229 Egypt - Late Old Kingdom present Inferred Expert -
Earliest reference to small bridge is for the new kingdom. Bridges over wide expanse of water unknown. [1] However, it is highly probable that small bridges were necessary before this time and Egyptians would have been more than capable of building and maintaining them.

[1]: (Arnold 2003, 37)


230 Egypt - Period of the Regions present Inferred Expert -
Earliest reference to small bridge is for the new kingdom. Bridges over wide expanse of water unknown. [1] However, it is highly probable that small bridges were necessary before this time and Egyptians would have been more than capable of building and maintaining them.

[1]: (Arnold 2003, 37)


231 Egypt - Thebes-Hyksos Period unknown Suspected Expert -
Earliest reference to small bridge is for the new kingdom. Bridges over wide expanse of water unknown. [1] However, it is highly probable that small bridges were necessary before this time and Egyptians would have been more than capable of building and maintaining them.

[1]: (Arnold 2003, 37)


232 Papal States - Renaissance Period present Confident Expert -
The papacy was responsible, through the Roman city government, for maintaining the bridges over the Tiber.
233 Spanish Empire I present Confident Expert -
"Churches, town halls, bridges, and public works of all sorts were created in the image of Escorial well into the second quarter of the seventeenth century." [1] "A majority of deputies to the Cortes of 1586-8 criticised the government for authorising too many schemes for bridges, without offering any funds of its own to help along the work." [2]

[1]: (Escobar 2016, 260) Escobar, Jesús. 2016. "Architecture in the Age of the Spanish Habsburgs." Journal of the Society of Architectural Historians 75(3): 258-261. https://www.zotero.org/groups/seshat_databank/items/itemKey/F2BFHI82

[2]: (Casey 2002, 11) Casey, James. 2002. Early Modern Spain: A Social History. New York: Routledge. https://www.zotero.org/groups/seshat_databank/items/itemKey/2SNTRSWT


234 Chuuk - Early Truk present Confident Expert -
According to SCCS variable 14 ’Routes of Land Transport’ ’2’ or ’improved trails, for porters or animal carriers’ were present. We are unsure whether this applies to the late 18th and early 19th centuries as well. Writing in the colonial period, Bollig mentions bridges: ’The Truk natives have the reputation of being the laziest and dirtiest people of the South Seas. /220/ Actually they do not hurt themselves with work. Most of them work only as much as they have to. Eating and sleeping, and eating again, fill up their time. And their uncleanliness is indescribable. It is almost as if they had no feeling at all for any order and cleanliness. Around the house filth, rags, food remains; in it, the same. To be sure, they have a word for broom ( böbö), but rarely use it. They also bathe, even several times a day, and yet are never clean. If a tree falls across the path, it remains there. Everybody who takes the path has to climb over it. If a bridge collapses, it remains for months and years, until it is replaced. [Page 243] Training the islanders in orderly activity, punctuality, and cleanliness will take much time and effort.’ [1] We have assumed that tree or liana bridges were present in some form in the pre-colonial period as well. This is open to re-consideration.

[1]: Bollig, Laurentius 1927. “Inhabitants Of The Truk Islands: Religion, Life And A Short Grammar Of A Micronesian People”, 242


235 Chuuk - Late Truk present Confident Expert -
According to SCCS variable 14 ’Routes of Land Transport’ ’2’ or ’improved trails, for porters or animal carriers’ were present. Bollig mentions bridges: ’The Truk natives have the reputation of being the laziest and dirtiest people of the South Seas. /220/ Actually they do not hurt themselves with work. Most of them work only as much as they have to. Eating and sleeping, and eating again, fill up their time. And their uncleanliness is indescribable. It is almost as if they had no feeling at all for any order and cleanliness. Around the house filth, rags, food remains; in it, the same. To be sure, they have a word for broom ( böbö), but rarely use it. They also bathe, even several times a day, and yet are never clean. If a tree falls across the path, it remains there. Everybody who takes the path has to climb over it. If a bridge collapses, it remains for months and years, until it is replaced. [Page 243] Training the islanders in orderly activity, punctuality, and cleanliness will take much time and effort.’ [1]

[1]: Bollig, Laurentius 1927. “Inhabitants Of The Truk Islands: Religion, Life And A Short Grammar Of A Micronesian People”, 242


236 Carolingian Empire II present Confident Expert -
Bridge building beginning in the 11th century. [1] There were existing bridges that could be maintained, e.g. in Paris.

[1]: (Boyer 1995, 1748-1751)


237 Early Merovingian present Confident Expert -
Roman era bridges. Gregory of Tours mentions the Grand pont over the Seine at Paris. [1]

[1]: (Yates and Gibson 1994, 13) Yates, N and Gibson, J M. 1994. Traffic and Politics: The Construction and Management of Rochester Bridge, AD 43-1993. Boydell & Brewer. Rochester.


238 Proto-Carolingian present Confident Expert -
Roman era bridges. Gregory of Tours mentions the Grand pont over the Seine at Paris. [1]

[1]: (Yates and Gibson 1994, 13) Yates, N and Gibson, J M. 1994. Traffic and Politics: The Construction and Management of Rochester Bridge, AD 43-1993. Boydell & Brewer. Rochester.


239 Middle Merovingian present Confident Expert -
Roman era bridges. Gregory of Tours mentions the Grand pont over the Seine at Paris. [1]

[1]: (Yates and Gibson 1994, 13) Yates, N and Gibson, J M. 1994. Traffic and Politics: The Construction and Management of Rochester Bridge, AD 43-1993. Boydell & Brewer. Rochester.


240 French Kingdom - Early Valois present Confident Expert -
Bridge built over Saone at St-Jean-de-Losne. [1] Bridge of St. Laurent at Macon. [2]

[1]: (Spufford 2006, 155)

[2]: (Spufford 2006, 164)


241 French Kingdom - Late Valois present Inferred Expert -
Early Valois bridges built over Saone at St-Jean-de-Losne. [1] and bridge of St. Laurent at Macon. [2]

[1]: (Spufford 2006, 155)

[2]: (Spufford 2006, 164)


242 Medang Kingdom present Confident Expert -
[1]

[1]: (Hall in Tarling 1993, 206)


243 Canaan absent Inferred Expert -
Bridges were absent during the Iron Age, [1] and there are no references to their presence earlier.

[1]: Dorsey (1991).


244 Yehuda present Confident Expert -
A large bridge spanned the Tyropoeon Valley, connecting the palace and the Temple Mount to the Upper City of Jerusalem, which is believed to have been built by the early Hasmoneans. This was destroyed during the siege of Pompey in 65 BCE by the city’s defenders.
245 Delhi Sultanate present Confident Expert -
During the reign of Sultan Firuz Shah (1351-1388 CE), "contemporary writers have noted with pride and joy that beautiful edifices were put up, including bridges, aqueducts, lakes, cisterns and irrigation channels." [1]

[1]: Siddiqui, I. H. (1986). Water works and irrigation system in India during pre-Mughal times. Journal of the Economic and Social History of the Orient/Journal de l’histoire economique et sociale de l’Orient, 52-77, p58.


246 Elam - Awan Dynasty I present Inferred Expert -
"Other major administrative achievements of the Elamites included ... the construction and maintenance of numerous public works and enterprises, such as roads, bridges, cities and towns, communication centers, and economic and commercial centers..." [1] -- which period?

[1]: (Farazmand 2009, 22) Farazmand, Ali. 2009. Bureaucracy and Administration. CRC Press. Boca Raton.


247 Late Roman Republic present Confident Expert -
The first bridge thought to be the Pons Sublicius possibly in built 642 BCE under Ancus Marcius. In 179 BCE the first stone bridge was constructed. [1] Caesar’s engineers bridged the Rhine with a wooden bridge in 10 days. The Pons Fabricius arch bridge was constructed in 62 BCE.

[1]: (Stearns 2001)


248 Early A'chik absent Confident Expert -
The A’chik initially used trails only. Sinha reports temporary bridges, but only for the second half of the 20th century: ‘There is but one cart road running from Bagmara to Damra via Tura, the headquarters of the district. It is a fair-weather road for vehicular traffic. In the rains, however, most of the temporary bridges become unsuitable for traffic. The other short roads run from Tura on to Phulbari and the other to Mankachar, the border region on the north and west of the district. There is a camel track running very close to the central ridge connecting Damra with Tura being linked with Siju. The Assam Trunk Road runs on the north of the district. The inhabitants of the place usually have to walk over the hills following the foot tracks to go from one place to another. Where the rivers or rivulets are sufficiently deep, people use dugout boats to cover the distance when necessary. Towards the centre of the district, boats as a means of conveyance are very risky. The slopes are too steep, and the boulders under the surface of the water are too big for safe plying of boats.’ [1]

[1]: Sinha, Tarunchandra 1966. “Psyche Of The Garos”, 1


249 Late A'chik absent Confident Expert -
According to SCCS variable 14 ’Routes of Land Transport’ only ’unimproved trails’ were used for land transport, not roads. The A’chik initially used trails only. Sinha reports temporary bridges, but at a later field date than the time period covered here: ‘There is but one cart road running from Bagmara to Damra via Tura, the headquarters of the district. It is a fair-weather road for vehicular traffic. In the rains, however, most of the temporary bridges become unsuitable for traffic. The other short roads run from Tura on to Phulbari and the other to Mankachar, the border region on the north and west of the district. There is a camel track running very close to the central ridge connecting Damra with Tura being linked with Siju. The Assam Trunk Road runs on the north of the district. The inhabitants of the place usually have to walk over the hills following the foot tracks to go from one place to another. Where the rivers or rivulets are sufficiently deep, people use dugout boats to cover the distance when necessary. Towards the centre of the district, boats as a means of conveyance are very risky. The slopes are too steep, and the boulders under the surface of the water are too big for safe plying of boats.’ [1] [There was precious little such infrastructure in the mid 50’s, so I suppose there was not much earlier. There was a one lane gravel/dirt road up to Tura when I was there.]

[1]: Sinha, Tarunchandra 1966. “Psyche Of The Garos”, 1


250 Mughal Empire present Confident Expert -
Bridges were constructed to allow faster transportation across land. [1]

[1]: Link


251 Abbasid Caliphate I present Confident Expert -
The bridges of Samarra are an example of Bridge making during the Abassid Caliphate. Its inscriptions and brickwork stand out. [1] [2]

[1]: Osman S. A. Ismail (1968). The founding of a new capital: Sāmarrā’. Bulletin of the School of Oriental and African Studies, 31, pp 1-13. provides further evidence of bridge building.

[2]: Bloom, Jonathan M., and Sheila Blair, eds. The Grove Encyclopedia of Islamic Art and Architecture p. 334


252 Kassite Babylonia present Inferred Expert -
"Routes were often dictated by the location of oases, mountain passes, and river crossings, by bridge, ford, or ferry."EXTERNAL_INLINE_REFERENCE: ;(McIntosh 2005: 139) McIntosh, J. 2005. Ancient Mesopotamia: New Perspective. Santa Barbara: ABC Clio. Seshat URL: EXTERNAL_INLINE_LINK: https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/KK2E3KMD .;
253 Bazi Dynasty present Inferred Expert -
"Routes were often dictated by the location of oases, mountain passes, and river crossings, by bridge, ford, or ferry."EXTERNAL_INLINE_REFERENCE: ;(McIntosh 2005: 139) McIntosh, J. 2005. Ancient Mesopotamia: New Perspective. Santa Barbara: ABC Clio. Seshat URL: EXTERNAL_INLINE_LINK: https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/KK2E3KMD .;
254 Dynasty of E present Inferred Expert -
"Routes were often dictated by the location of oases, mountain passes, and river crossings, by bridge, ford, or ferry."EXTERNAL_INLINE_REFERENCE: ;(McIntosh 2005: 139) McIntosh, J. 2005. Ancient Mesopotamia: New Perspective. Santa Barbara: ABC Clio. Seshat URL: EXTERNAL_INLINE_LINK: https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/KK2E3KMD .;
255 Second Dynasty of Isin present Inferred Expert -
"Routes were often dictated by the location of oases, mountain passes, and river crossings, by bridge, ford, or ferry."EXTERNAL_INLINE_REFERENCE: ;(McIntosh 2005: 139) McIntosh, J. 2005. Ancient Mesopotamia: New Perspective. Santa Barbara: ABC Clio. Seshat URL: EXTERNAL_INLINE_LINK: https://www.zotero.org/groups/1051264/seshat_databank/items/itemKey/KK2E3KMD .;
256 Neo-Babylonian Empire present Confident Expert -
The city of Babylon straddled the Euphrates river and a bridge was maintained to join the two parts of the city [1]

[1]: Gill, A. 2008. Gateway of the Gods: Rise and Fall of Babylon. London: Quercus. p.104


257 Achaemenid Empire present Confident Expert -
"Mandorcles, another engineer of the Darius period, constructed a bridge over Begas Bosporus to allow the army to pass over. Bolts and nuts were used to fix the boards in its construction." [1] "Darius crossed into Europe (in about 513) over a pontoon bridge built by his Samian engineer, Mandrocles (a feat not rivaled until 1973), which continued the royal road into Europe." [2]

[1]: (Angelakis, Mays and Koutsoyiannis 2012, 94) Angelakis A N, Mays L W, Koutsoyiannis, D. 2012. Evolution of Water Supply Through the Millennia. IWA Publishing.

[2]: (Shahbazi 2012, 127) Shahbazi, A Shapour. The Archaemenid Persian Empire (550-330 BCE) Daryaee, Touraj. ed. 2012. The Oxford Handbook of Iranian History. Oxford University Press.


258 Ak Koyunlu present Confident Expert -
"There are abundant material remains and other nonwritten sources for the Aq-quyunlu period. Metin Sozen has catalogued nearly one hundred Aqquyunlu architectural structures in almost thirty locales in Anatolia alone. These buildings include mosques, madrasas, tombs, hospices, markets, caravanserais, baths, bridges, fountains, palaces, and fortifications. Unfortunately, no similar work exists for these monuments constructed in Iran during the imperial period, many of which have now disappeared." [1]

[1]: (Woods 1998, 218)