NF Railway   Northeast Frontier Railway , Bogibeel Rail-cum-Road Bridge , Dibrugarh, Assam 
The Bogibeel rail-road bridge is a double-deck bridge with a two-line railway track on the lower deck and a three-lane road on the upper. The rail project comprises the laying of 74km of railway line, including the rail links on the south and north banks of the river. The rail line will be linked to Chowalkhowa, which is 5.83km from Dibrugarh, on the south bank and between Sisi Borgaon and Sirpani on the north bank.
The work on the railway line is being undertaken by Northeast Frontier Railway. The road project includes construction of 29.45km of road to be undertaken by the Assam Public Works Department (PWD). About INR30.87bn ($576m) worth of works are being executed by the Northeast Frontier Railway while INR2.91bn ($54m) works are being undertaken by Assam PWD.
The rail-road bridge is the fourth being built on the river, the others being Pandu Saraighat, Kolia-Bjumuraguri and Naranarayan Setu at Jogighopa - all of them in Assam. The Bogibeel Bridge is the longest structure being built on the River Brahmaputra.