A1(M) closure amid electrical issue with Hatfield Tunnel

At around 2.44am today (September 28), National Highways confirmed that the motorway had been shut between junction 3 and junction 4 northbound as well as between junction 4 and junction 2 southbound.

It has been caused by an electrical issue affecting Hatfield Tunnel.

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Motorists have been urged to plan ahead before any journeys that would ordinarily use the route and expect delays.

“Our engineers are currently in attendance working to rectify the issue,” a spokesperson added.

Two diversion routes have been made, for northbound and southbound journeys.

Update: The tunnel has since reopened

The #A1M in #Hertfordshire is now OPEN both ways between J2 & J4 following the earlier electrical fault in Hatfield Tunnel.

We may have to close the road again tonight, and if so will provide an update on this feed.

Thanks for your patience whilst the closure was in place. pic.twitter.com/1PWXyXFtuP

— National Highways: East (@HighwaysEAST) September 28, 2024

Northbound:

• Exit the A1M junction 3 and, at roundabout, take the second exit on the Roehyde roundabout towards Hatfield.
• At the Galleria roundabout take the second exit.
• At the next roundabout take the third exit following directions for Hartford A1001 (A414).
• At the next Clock roundabout take the second exit to join the A1M J4.

Southbound:

• Exit the A1M J4 and at the roundabout, take the third exit towards Hatfield A1001.
• At the next roundabout take the third exit towards St Albans A1001.
• At the Galleria roundabout take the second exit towards Conley Heath A1001.
• At the Roehyde roundabout take the second exit heading towards London A1M
• At the next roundabout take the second exit to join the A1M J2.