Thanlwin Bridge (Mawlamyaing) was the longest bridge in Myanmar before the construction of the Pakouku Bridge and it connects the city of Mawlamyaing with Mottama. Constructed at the confluence of the Thanlwin River, the Gyaing River and the Attayan River in Mon State, the bridge has features a two-mile (3 km)-long motor road and a four-mile (6 km)-long railroad as well as pedestrian lanes.
The approach structure of the rail bridge on Mawlamyaing bank is 1.22 miles (1,960 m) long, while on the Mottama bank is 1.42 miles (2,290 m) long. The total length of the rail bridge is 4.1 miles (6,600 m) long. The Ministry of Construction was responsible for the designing and building the bridge.
