COMMUTERS face six weeks of disruption on the key Glasgow to Edinburgh rail line as electrification works progress.

Part of the main Edinburgh-Glasgow route will be closed from June 13 to July 27 as part of the £750 million Edinburgh-Glasgow Improvement Programme (Egip) to enable longer and faster trains to run between Scotland's two biggest cities.

Journeys which normally take around 50 minutes could take up to an hour and 15 minutes during the period, which will see the Winchburgh tunnel in West Lothian closed to trains while signalling infrastructure is upgraded. The tunnel is being also being enlarged as part of the Egip project to allow overhead wires to be fitted.

As a result trains will be diverted via Dalmeny, beside the Forth Bridge, then have to reverse onto another line.

The work will coincide with the Open Championship at St Andrews which is expected to increase demand for east-west rail services.

Services between Dunblane, Alloa and Edinburgh are also likely to be hit.

A spokeswoman for Transport Scotland said the organisation was working "closely with both Network Rail and ScotRail to minimise the duration of the closure".