The challenges of working in tunnels

Ever wondered what it takes to look after thousands of tunnels?

We're responsible for 30,000 bridges, tunnels and viaducts as well as 20,000 miles of track.

As part of our Railway Upgrade Plan to provide better journeys we're modernising structures, many of which date from the Victorian era, across Britain.

Maintaining our tunnels is a privilege and involves challenges unique to working underground.

Find out how we overcome them and how conditions differ from those we encounter overground...