The Mannar line was built as part of a plan to create a rail link between Sri Lanka and India. A 22-mile bridge to link the two countries had been proposed as early as 1894, by the Consultant Engineer for railways in Madras. The proposal was given serious consideration and a technical blueprint and cost analysis was conducted. By 1914, the Mannar line was built to connect Talaimannar on Mannar Island to the Sri Lankan mainland. On the Indian side, the Indian railway network was extended to Dhanushkodi. The international bridge to link the two was not built.
Operation
During the Mannar line's operation, trains connected Mannar and Talaimannar with cities along the northern line, such as Anuradhapura and Kurunegala, eventually reaching Colombo. The Boat Mail was a major service on the line, allowing passengers to board a ferry to Rameshwaram in India. Passengers could use the Boat Mail service to travel between Colombo and Chennai. The ferry service to connect the railheads at Talaimannar and Dhanushkodi lasted until the 1960s, when a cyclone destroyed the pier and rail line at Dhanushkodi. The Mannar line was not affected. The ferry service resumed with a new Indian terminus at Rameshwaram.
War and revival
All services on the line were stopped in June 1990 due to the civil war. The tracks, stations and other infrastructure on the line were subsequently destroyed during the war. In the 2000s, the rail bridge to connect the two countries was proposed again, highlighting the benefits of connecting the ports of Colombo and Trincomalee with Chennai. Following the end of the civil war in May 2009, the government initiated various projects to rebuild the entire line. The contract to reconstruct the line between Medawachchiya Junction and Madhu was awarded to IRCON International, the Indian state-owned engineering and construction company. The project will cost US$ 81 million and would be financed by a soft loan from the Indian government. IRCON has also been awarded the contract to reconstruct the line between Madhu and Talaimannar. The project will cost US$ 150 million and would be financed by a soft loan from the Indian government. The section of the line between Medawachchiya and Madhu Road reopened on 14 May 2013, following its reconstruction. The reconstruction of the entire line is completed in 2015.
services operate from Medawachchiya Junction to Madhu Road, while daily trains operate between Madhu Road and Colombo Fort. Four train services are operating between Colombo Fort and the Talaimannr Pier daily.
Infrastructure
The Mannar line is entirely single track, at 5 ft 6 in broad gauge, both before the war and after reconstruction. The line was not electrified and the current reconstruction project will not include electrification.