Project launch
West Highland Line to close for 13 million pounds of November works
By Staff Writer | 07-09-2026
Network Rail has announced a nine day closure of the West Highland Line this November while it carries out 13 million pounds of track, drainage and structures work between Helensburgh, Fort William and Mallaig. Buses will replace trains between Crianlarich and Fort William and Mallaig from Monday 9 to Tuesday 17 November. The announcement was made on Friday 4 September 2026.
What the 13 million pounds buys
The work is split into four strands on the announcement. The largest is track: more than four kilometres of worn track are to be renewed at locations between Helensburgh and Mallaig, and the sites named are near Arisaig, at Corrour, inside the Loch nan Uamh and Beasdale tunnels, at Arrochar and Tarbet station and on Gleann Mama Viaduct. Network Rail says the purpose is to improve reliability and reduce the risk of delays.
The second strand is drainage. Culverts are to be renewed and drainage improved, with the section between Glen Douglas and Arrochar and Tarbet named, to make the line more resilient to flooding and extreme weather. The third strand is structures: Fassfern Bridge near Spean Bridge is to be refurbished and a redundant bridge near Loch Eil is to be removed. The fourth is vegetation clearance between Fort William and Arisaig.
The 13 million pound figure is Network Rail's own, given as the value of the upgrades carried out during the closure. No contractor is named on the announcement and no breakdown of the figure between the four strands is published. It is not a contract award and it should not be read as one.
Why the line closes rather than working around trains
The announcement is explicit that the closure was chosen to concentrate the work. Gerry McQuade, capital delivery director at Network Rail Scotland, said:
The West Highland Line is one that people really depend on, whether they're travelling to work, visiting family or exploring some of Scotland's most spectacular scenery. This work is about making sure the route continues to provide a dependable service for the communities and visitors who use it every day.
Gerry McQuade, capital delivery director, Network Rail Scotland
We know closing the line isn't ideal at any time, but it gives us the opportunity to carry out a large amount of work in one go, rather than causing repeated disruption over a longer period. We'd like to thank passengers and local communities for their patience while this takes place and look forward to reopening the line when these improvements are completed.
Gerry McQuade, capital delivery director, Network Rail Scotland
For a contractor the choice matters more than the sentiment. A nine day possession with two tunnels, a viaduct, a bridge refurbishment and a bridge removal all in the scope means the track, drainage and structures gangs are working the same window along the same line. The announcement gives no possession plan, no sequence and no statement of which sites are worked first. Those details sit with Network Rail and whichever supply chain it has engaged, and none of it is on the public record.
The operator's position
ScotRail, which runs the passenger service, is quoted at length on the announcement. Mark Ilderton, its Service Delivery Director, said:
The West Highland Line is an important lifeline for the communities it serves and one of the most iconic railway routes in Scotland, so this significant investment by Network Rail is very welcome.
Mark Ilderton, Service Delivery Director, ScotRail
We'll be working closely with Network Rail to keep people informed and provide alternative travel arrangements so customers can continue to travel with confidence while the improvements are made. We're encouraging anyone planning to travel during the works to check their journey in advance and allow extra time for travel.
Mark Ilderton, Service Delivery Director, ScotRail
The announcement records that Network Rail and the train operators are working together to support local communities and passengers during the closure, and that the replacement bus service runs between Crianlarich and Fort William and Mallaig. It does not say whether services south of Crianlarich, or on the Oban branch, are affected.
On the record: the value, 13 million pounds; the closure, nine days from Monday 9 to Tuesday 17 November; the geography, Helensburgh to Fort William and Mallaig; the four strands of work and the named sites within each; and the quotations above.
Not on the record: who is doing the work, how it was procured, how the 13 million pounds is split, the number of people on site, and whether the figure includes the bus replacement and the vegetation clearance or only the engineering. Anyone pricing similar rural possessions should treat the figure as the client's published total for the closure and nothing more precise than that.