A3 Hindhead Tunnel Southbound Closed After Tech Glitch – Follow Solid Triangle Diversion for Major Delays

Chaos on the A3 Hindhead Tunnel as Southbound Lane Shuts

Travellers face major disruption on the A3 Hindhead Tunnel today. The southbound tunnel is completely closed after a tech glitch knocked out the traffic lights and barriers.

Follow the Solid Triangle Diversion – Here’s the Route

With the tunnel closed, drivers must follow the solid triangle diversion signs. Here’s the official detour:

1. Exit the A3 Southbound at Stag Hill interchange (Hogs Back) and join the A31 towards Farnham.
2. Continue along the A31 for around 7 miles to Shepherd and Flock roundabout.
3. Take the 1st exit onto the A31 Farnham Bypass.
4. At the B3001 junction, cross over to the RBT A31/A325.
5. Take the 1st exit onto the A325 and follow it to Longmoor Interchange.
6. Cross the RBT and re-join the A3 Southbound at the Longmoor on-slip.

Drivers should expect delays and allow extra travel time.

Fix Underway but Be Prepared to Wait

Engineers are on site hustling to fix the problem. But for now, motorists will have to stick to the diversion and steer clear of the tunnel closure.

Stay Updated with the Latest Info

• Visit National Highways for real-time updates.
• Use travel apps and regional X feeds for live traffic news.
• Call the National Highways 24/7 helpline at 0300 123 5000 for assistance.

Authorities thank drivers for their patience as they battle to get the tunnel back up and running.