Mashrak–Thawe Extension Railway
Mashrak–Thawe Extension Railway was owned by the Government of India and worked by Bengal and North Western Railway. History 

The  metre gauge line from Mashrak to Thawe was opened 12 January 1931. The Mashrak-Thawe Extension Railway was merged into the Oudh and Tirhut Railway on 1 January 1943. Conversion to broad gauge 

The railway line was converted to  broad gauge in 2017. 