By May 1855 the Western Valley line was connected to the Eastern Valley line at Mill Street station,[5] although Dock Street station continued to act as a terminus.[citation needed]
By January 1879 a connection was made from Park Junction to Gaer Junction just west of the Hillfield Tunnels on the South Wales Main Line.[6] On 12 May 1880, all Western Valley trains were diverted via this new chord to High Street station.[3]London and North Western Railway services from the Sirhowy branch followed on 1 June 1880.[3] The station then closed to passengers.[3][2] The line between Dock Street and Pill Bank Junction remained open for goods traffic until 1991.[7]
Clinker, C. R. (1988) [1978]. Clinker's Register of Closed Passenger Stations and Goods Depots in England, Scotland and Wales 1830–1980 (2nd ed.). Bristol: Avon-Anglia Publications & Services. ISBN978-0-905466-91-0. OCLC655703233.
Cobb, M.H. (2006) [2003]. The Railways of Great Britain: A Historical Atlas. Vol. 1. Shepperton, Surrey: Ian Allan Publishing Ltd. ISBN978-0-7110-3236-1.
Conolly, W. Philip (2004) [1958]. British Railways Pre-Grouping Atlas and Gazetteer. Hersham, Surrey: Ian Allan. ISBN978-0-7110-0320-0.
MacDermot, E.T.; Clinker, C.R. (1972) [1927]. History of the Great Western Railway, volume II 1863-1921. Shepperton: Ian Allan. ISBN0-7110-0412-9.