|Covid-19|June 17 – The Somerset Central Railway in England is authorized.
July 14 - Isambard Kingdom Brunel's Chepstow Bridge is opened to traffic, completing the South Wales Railway throughout from Gloucester (England) to Swansea.
October 10 - The first revenue trains operate over the Chicago & Rock Island Railroad, an early predecessor of the Chicago, Rock Island and Pacific Railroad, between Chicago and Joliet, Illinois.
October 14 - Opening of London King's Cross station by the Great Northern Railway (Great Britain).
November 20 - The Lake Shore and Michigan Southern Railway line between Erie, Pennsylvania, and Cleveland, Ohio, opens.
December 11 - Wilhelm Engerth patents the Engerth locomotive, an early articulated locomotive.
John Cooke steps down from the superintendent position at Rogers Locomotive and Machine Works to partner with Charles Danforth in forming the new locomotive manufacturing company, Danforth, Cooke and Company in Paterson, New Jersey.
The first 2-6-0 steam locomotives are built.
Great Southern and Western Railway of Ireland builds first locomotive at its Inchicore Works, Dublin.
John Edgar Thomson becomes president of the Pennsylvania Railroad.
August 16 – Charles Sanger Mellen, president of Northern Pacific Railway 1897-1903 and New Haven Railroad beginning in 1903 (d. 1927).
J. Elfreth Watkins, railroad civil engineer and first curator for the Smithsonian Institution's railroad artifacts including John Bull.
1852 in rail transport Wikipedia
This article lists events related to rail transport that occurred in 1852.