 Construction began in summer 2013, with the curve originally planned to be in use from the May 2014 timetable change, delayed from the originally mooted date of the end of 2013, allowing through trains to run from Burnley to Manchester Victoria in less than one hour.Services were delayed due to a lack of available rolling stock and signalling work running behind schedule, and instead began at the May 2015 timetable change.In addition to the work to lay in new track on the curve itself and a completely new junction at the Todmorden end, significant alterations to the signalling system have been required to allow trains to use the new curve (these were only fully completed in February 2015, which is why the curve could only be used by Burnley-bound trains when the curve was first brought into service).