UK Road Tunnel Closures — Live Traffic & Roadworks
Live road closure data for every major UK road tunnel. Check current closures on the Mersey Tunnel, Blackwall Tunnel, Dartford Tunnel, and all other UK road tunnels.
ℹ About UK Road Tunnels
UK road tunnels carry millions of vehicles per year under rivers, estuaries, and urban areas. When a tunnel closes, traffic must divert via alternative routes — often causing severe congestion. Height and width restrictions mean some tunnels are unsuitable for HGVs and tall vehicles.
Browse by Tunnel (10 tunnels)
Frequently Asked Questions About UK Road Tunnels
Why are road tunnels closed?
Road tunnels are closed for maintenance, emergency repairs, accidents, and safety inspections. Height and width restriction incidents (vehicles too tall or wide) are a common cause of closures. Tunnels under rivers may also close due to flooding or structural issues.
What happens when a tunnel is closed?
When a tunnel closes, traffic must divert via alternative routes. For river crossings, this often means significant detours. For example, when the Mersey Tunnels close, traffic must divert via the Runcorn-Widnes crossings, adding up to 30 minutes to journey times.
How do I check if a tunnel is closed?
Tunnel closures are reported through the UK government's Street Manager system and National Highways. Select your tunnel above to see current closures and planned maintenance.