19th century Folkestone Harbour was in decline in the 1830s, as nearby
Dover became an increasingly important cross-channel port. Ships had difficulty approaching because of drifting
shingle blocking the entryway. The harbour was acquired by the
South Eastern Railway (SER) in August 1843 for redevelopment, but the steep chalk downs around the town made it impractical to route a main railway line through it. Consequently, a
branch line was proposed. Construction began in 1843, with the line intended mainly for freight. The route left the
South Eastern main line at Folkestone Junction (by the
then main station) and was double tracked, running at a gradient of
1-in-32 over . It reached the harbour on a viaduct designed by SER chief engineer
William Cubitt. A
swing bridge was added to the viaduct in 1847, which allowed trains to cross the harbour and reach the southern pier. The harbour was extended over
reclaimed land via a stone
groyne gradually southwards to catch drifting shingle, which built up and allowed the SER to build a longer pier that ferries could use irrespective of the height of the tide. For most of its life, the station's main traffic was passengers travelling on boat trains directly from or to London, albeit with a change of direction (reversal) at Folkestone Junction. The SER planned to extend the branch line from to to reach the harbour directly, but were blocked by the
Earl of Radnor who owned the land. Nevertheless, the station became popular with passengers in Folkestone as it avoided climbing a steep hill on foot to meet the mainline stations. The station was opened on 1 January 1849, but was replaced by another on a different site in 1856. This second station went through periods of temporary closure, particularly in wartime: from 29 November 1915 until 1 March 1919; from 4 September 1939 until 1945; from 13 to 20 March 1960; and between 1 January and 11 April 1992. A three-track-wide goods shed was added to the station in 1881. It was moved in 1899 and 1910, before closing in 1919. It continued to be used for rail purposes until it was demolished in the early 1960s. The swing bridge over the harbour was replaced in 1893. The current bridge was constructed by the
Southern Railway in 1930, designed by the company's chief engineer
George Ellson. A transparent footbridge was built over the station in 1980, to avoid having to cross an electrified line. In 2003, a report showed that the line over the viaduct was rusty and the station as "deserted and decrepit". On 20 May 2004, the
Venice-Simplon Orient Express (VSOE) began two scheduled services per week from
Victoria to
Paris via
Ashford and Folkestone Harbour, reversing at Folkestone Junction. These services lasted until 2008. The swing bridge and viaduct over the harbour was
Grade II listed in January 2012. Its listing by
Historic England refers to "group" value with the harbour's east pier and lighthouse, which are also Grade II listed. ==Closure==