A survey of the track had shown that its poor construction would not support commercial railroad traffic .
After Japan 's capitulation , the British Army removed about 3.9 kilometres of the original Japanese railroad track on the Thai -- Burma border .
A survey of the track had shown that Japan 's poor construction would not support commercial railroad traffic .
After Japan 's capitulation , the British Army removed about 3.9 kilometres of the original Japanese railroad track on the Thai -- Burma border .