 The work stretched over a segment of 1.2 kilometers (0.75 mi) of line. Construction started in February 2006 with work on expanding Granfoss Bridge, both lengthening it and building one parallel to it to allow four tracks. From May work commenced on the first new platform, which was completed in February 2007 and all traffic moved to the new tracks and platform. Then the old platform was demolished and a second new platform built, which was completed in 2009. The work took 776,000 man-hours and cost NOK 1.2 billion. The station was taken into use on 22 August 2009, although the official opening of the new station took place on 1 September 2009. The Bærum Tunnel opened on 26 August 2011. To allow more trains to terminate at Lysaker, a suitable place to turn trains needed to be built. Høvik Station was chosen and received three new tracks. With its completion on 14 December 2014 all trains previously terminating at Skøyen were extended to Lysaker.
