High Quality Content by WIKIPEDIA articles! The South Yorkshire Railway was a railway company which was based in the south of the former West Riding of Yorkshire, England. Its first section of line opened on 10 November 1849 between Swinton Junction and Doncaster. As well as extensive colliery traffic, the company`s tracks eventually supported a passenger service between Barnsley and Doncaster; a branch line from Wombwell to Sheffield through the Blackburn valley; and services beyond Doncaster to Thorne and Keadby.