There are currently no railways in Bahrain.
In 2021, tenders were invited for the initial phase of a Metro network covering the built up areas of the island and connecting with the International Airport. The initial phase will be a 29km, 2 line system; a complete network of 109km with 4 lines is proposed.
Also expected to be put out to tender in 2021 or 2022 is a project for a 87km railway connecting the Bahrain capital, Manama, with the Saudi Arabian railway network. The railway would share the proposed 26km King Hamad Causeway and 10km bridge with a new road, paralleling the existing road only King Fahd Causeway between the two countries. A proposal for a similar, but much longer, causeway linking Bahrain with Qatar is not currently being pursued.
Picture image from a press release by the Bahrain Ministry of Transport