It was built by the Great Western Railway in 1912 to provide a faster and less steeply graded route between London and Fishguard, in connection with the recently opened harbour at the latter place.
Network Rail are considering rationalisation of this line following replacement of the Loughor railway viaduct and re-doubling of the track at Gowerton, work which was completed in 2013.
[1] The rail transport campaign group, the Railway Development Society has proposed instead that this link be restored for passenger services including building stations to serve Llandarcy, Morriston and Grovesend.
[2] In 2017, the UK Government commissioned an independent report by the University of South Wales into developing a new parkway station at Felindre.
[3][4] The Department for Transport announced in July 2019 that it would be proposing the re-opening of the District line to passenger traffic as part of a £20m project which would see a West Wales Parkway station open near to Felindre.