The £742 million Edinburgh Glasgow Improvement Project (EGIP) will electrify the Edinburgh to Glasgow main line that carries around 20,000 passengers each day and is Britain's busiest inter-urban route.

The line opened in 1842, and its electrification requires work at almost all of its original structures.

As part of EGIP electrification, Winchburgh tunnel, just east of Linlithgow on the route out of Edinburgh Waverley, required track lowering up to 200mm and the installation of slab track at a cost of £17 million. This is an essential element of the Edinburgh to Glasgow electrification, which will transform train services across Scotland's central belt.

To find out more about the Winchburgh tunnel project, download this free white paper.