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Cầu Cai Lậy (Cai Lay Bridge)

Cầu Cai Lậy (Cai Lay Bridge)

Primary Photographer(s): Nathan Holth

Bridge Documented: December 6, 2018

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Cai Lậy: Tiền Giang Province (Tỉnh Tiền Giang): Vietnam (Việt Nam)
Construction Date and Builder / Engineer
By Builder/Contractor: Unknown
Rehabilitation Date
Not Available or Not Applicable
Main Span Length
100.0 Feet (30.5 Meters)
Structure Length
185.0 Feet (56.4 Meters)
Roadway Width
16 Feet (4.88 Meters)
3 Main Span(s)
Inventory Number
Not Applicable

Historic Significance Rating (HSR)
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Bridge Documentation

Very little is known about this bridge and its history. The bridge lengths and widths given are very rough guesses. This concrete truss bridge has the shape and appearance of a cantilever truss bridge, but it is perhaps better described as a continuous truss bridge. A new bridge immediately north of this bridge today bypasses the historic bridge and carries the main highway. However, the bridge carries motorbike traffic and other forms of light vehicles, and connects the new high-level bridge to a road that goes under the bridge, and also provides connectivity to roads that run along the river which do not intersect with the new bridge. Thus, the bridge still retains a functional use and has not been simply abandoned.

Concrete truss bridges are one of the most rare bridge types in the world. Concrete simply never became a popular material for constructing truss bridges. Continuous and/or cantilever concrete truss bridges are an even more rare subcategory of concrete truss bridge. There are at least three bridges of this type that have been built in Vietnam. One was destroyed with some remnants surviving today. Another, Cầu Sêrêpốk crosses the Srepok River between Đắk Nông Province and Đắk Lắk Province. Unidentified historical photos further suggest there was at least one more bridge in addition to these three, and it is quite likely there may be more unaccounted examples, which may or may not survive today. Although all three bridges noted above are rare examples of continuous concrete truss bridges, the exact design details of each of these bridges varies, meaning these were not a "standard" bridge design in Vietnam. In any case, each surviving bridge is a rare and highly significant historic bridge, a bridge type that many countries do not have a single example of.


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