Greenisland railway station serves Greenisland in County Antrim, Northern Ireland. The station opened on 11 April 1848 as Carrickfergus Junction. It was renamed on 10 January 1893. The station used to be larger, with a third platform, but this was removed after the closure of the spur to the Londonderry Line. The station building is manned from 7am to 3pm. A park and ride facility was built in 2009. Greenisland Loop LineIt had long been recognised that the need for Main Line trains to reverse at Greenisland was undesirable. Various plans for a direct line bypassing Greenisland had been proposed over the years but the engineering problems faced by having to cross Valentine's Glen near Whiteabbey and surmount Mossley Col had precluded these.