Which North-eastern Indian state is the home to India’s largest rail-cum-road bridge?

The Correct Answer is Assam. Assam state is home to India's largest rail cum bridge road bridge. Assam is home to a 4.94-kilometer-long rail-cum-road bridge, Bogibeel Bridge. Bogibeel Bridge is a combined road and rail bridge over the Brahmaputra River in the North-Eastern Indian state of Assam between Dhemaji district and Dibrugarh District which was started in the year 2002 and took a total of 200 months to complete. The 4.98 Km long bridge will not only reduce the distance for the people of Arunachal Pradesh and Assam but also facilitate faster movement of troops and supplies to the India-China border in Arunachal Pradesh. The Rail Road Bridge is the fourth being built on the river, the others being Pandu Saraighat, Kolia-Bjumuragiri, and Narayan Setu at Jogighopa, all of them in Assam. The 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 road level will be 10.5m above the railway line.