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The largest bridge dam was the Band-e Kaisar which was erected by a Roman workforce on Sassanid territory in the 3rd century AD. [38] The approximately 500 m long structure, a novel combination of overflow dam and arcaded bridge , [ 39 ] crossed Iran's most effluent river on more than forty arches. [ 40 ]
Built in 142 BC, the Pons Aemilius, later named Ponte Rotto (broken bridge), is the oldest Roman stone bridge in Rome, with only one surviving arch and pier. However, evidence suggests only the abutment is original to the 2nd century BC while the arch and pier perhaps date to a reconstruction during the reign of Augustus (27 BC – 14 AD). [ 39 ]
Ponte Sant'Angelo in Rome, Italy Roman stone pillar bridge in Trier, Germany. The arches were added in the 14th century. Pons Cestius, Rome, during a flood. This is a list of Roman bridges. The Romans were the world's first major bridge builders. [1] The following constitutes an attempt to list all known surviving remains of Roman bridges.
The first level of the Pont du Gard adjoins a road bridge that was added in the 18th century. The water conduit or specus, which is about 1.8 m (6 ft) high and 1.2 m (4 ft) wide, is carried at the top of the third level. The upper levels of the bridge are slightly curved in the upstream direction.
The Pons Fabricius (Italian: Ponte Fabricio, "Fabrician Bridge") or Ponte dei Quattro Capi, is the oldest extant bridge in Rome, Italy. [1] Built in 62 BC, it spans half of the Tiber River, from the Campus Martius on the east side to Tiber Island in the middle (the Pons Cestius is west of the island).
The world's longest suspension bridges are listed according to the length of their main span (i.e., the length of suspended roadway between the bridge's towers). The length of the main span is the most common method of comparing the sizes of suspension bridges, often correlating with the height of the towers and the engineering complexity involved in designing and constructing the bridge. [4]
The Pont Saint-Martin is a Roman bridge in the Aosta Valley in Italy dating to the 1st century BC. The span is 31.4 metres (103 ft) [1] according to recent research, but frequently stated to be 35.64 m or 36.65 m. [2] Other extant Roman bridges in the Aosta valley include the Pont d'Aël in the Cogne Valley and the Pont de Pierre in Aosta.
Note: There is no standard way to measure the total length of a bridge. Some bridges are measured from the beginning of the entrance ramp to the end of the exit ramp. Some are measured from shoreline to shoreline. Yet others use the length of the total construction involved in building the bridge.