Cooch Behar State Railway (CBSR) was a 2 ft 6 in (762 mm) narrow-gauge railway from Jayanti to Lalmonirhat in the Indian state of West Bengal.
[1] After some deliberations and discussions with the British authorities about their plans, it was decided in 1891–92 to build a 2 ft 6 in (762 mm)-wide narrow gauge railway from the southern bank of the Torsa opposite Cooch Behar town to Gitaldaha, a station on the tracks of Eastern Bengal Railway connecting Dhubri with Lalmonirhat, now in Bangladesh.
[1] Cooch Behar town was connected after a bridge was built on the Torsa and the line was extended to Alipurduar, Buxa and Jayanti near the India–Bhutan border.
It was converted to 1,000 mm (3 ft 3+3⁄8 in)-wide metre gauge in 1910.
[4] The line was converted to 5 ft 6 in (1,676 mm) broad gauge in 2007.