The Burma Railway, is a 415-kilometre railway between Ban Pong and Thanbyuzayat, Burma, built by the Empire of Japan from 1940–1944 to supply troops and weapons in the Burma campaign of World War II. This railway completed the rail link between Bangkok, Thailand, and Rangoon, Burma.
The Thai portion of the railway continues to exist. Most of the Burmese portion of the railroad fell into disrepair decades ago and has not seen service since. One of the most notable portions of the entire railway line is Bridge 277, the so-called “Bridge on the River Kwai”, which was built over a stretch of the river that was then known as part of the Mae Klong River.
A first wooden railroad bridge over the Khwae Yai was finished in February 1943, which was soon accompanied by a more modern ferro-concrete bridge in June 1943. The newer steel and concrete bridge was made up of eleven curved-truss bridge spans. This is the bridge that still remains today.
This bridge was made famous by Pierre Boulle in his book and the film which was based on it, The Bridge on the River Kwai.