Hindhead Tunnel
The Hindhead Tunnel in Surrey is just under two kilometres long and is one of the longest road tunnels in the UK. It takes the A3 beneath the Devil's Punch Bowl, a Site of Special Scientific Interest.
Latest updates
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20 March 2025
Overnight closures - March and April
We need to close the tunnel overnight for essential maintenance.
We'll close the A3 southbound between A31 Hogs Back junction to Hazel Grove junction overnight (9pm to 6am):
- from 9pm Tuesday 25 March to 6am Saturday 29 March
- from 9pm Monday 31 March to 6am Saturday 5 April
We'll also close Longmoor junction and Hazelgrove junction northbound.
There will be local access only southbound:
- between Hogs Back and Milford, week commencing Monday 24 March
- between A31 Hogs Back and Bowlhead Green, Thursley, week commencing Monday 31 March
Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.
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12 March 2025
Essential maintenance
We need to close the tunnel in both directions for essential maintenance over seven nights.
The A3 will be closed southbound from A31 Hogs Back and Bowlhead Green Thursley.
Longmoor junction and Hazelgrove junction will also be closed northbound.
The overnight closures will be 10pm to 6am each night during:
- Tuesday 25 March to 6am Saturday 29 March
- Monday 31 March to 6am Wednesday 2 April
- Thursday 3 April to 6am Friday 4 April
Diversions:
From A3 northbound, on the Thursley to Compton road, use the B3000 Puttenham Heath Road to the A31.
From the A31, heading southwest, south of Guildford
- A31 to Chawton,
- A32 south to West Meon Hut,
- A272 east to A3 at Petersfield
Please use this route in reverse order for the A31 northbound diversion.
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15 January 2025
Northbound closures - 16 to 24 January
We will close the tunnel northbound from 16 to 24 January between Hindhead and Thursley.
This is part of a series of weeknight A3 closures.
A long diversion route onto the A31 will be in place.
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01 November 2024
Temporary speed limit - new date for repair
The speed limit through the northbound side of the tunnel will remain in place now until mid-December. We will be doing the necessary repairs to resolve the fault and lift the temporary speed limit during night time closures (9pm-5am) of the tunnel on 16, 17, 18 and 19 December. The normal diversion route will be in place via A325 and A31 as usual.
November’s monthly routine maintenance will still be carried out during the week commencing 18 November. The tunnel will not be closed for this but will operate in contraflow during this work.
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15 January 2024
Weeknight closures for lighting upgrades - November 2023 - March 2024
We’re working to replace some of the lighting in both bores of the Hindhead Tunnel to improve safety and visibility. Work is due to start on weeknights from Wednesday 15 November till March 2024. We’ll only need to close one entrance to the tunnel at a time and use a contraflow system, so you’ll still be able to travel through. We apologise for any inconvenience caused during our safety upgrades.
Please remember that closure details can change at short notice. For the most up-to-date information, please visit our daily closures page.
Project information
Overview
We carry out regular maintenance of the tunnel to keep it safe and working properly. When we do maintenance we try to avoid fully closing the tunnel and use a contraflow system instead.
Benefits
The Hindhead Tunnel contains a range of technology. One of the latest additions are the ‘Swift Gates’ which were added in 2022.
Documents
Related Road projects
Traffic information
Information about scheduled roadworks and events on our motorways and major roads.Sign up for updates!
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