A3/A322 Dennis Roundabout Guildford concrete repairs
We're repairing the concrete structure of the A3 Dennis Roundabout and refurbishing and resurfacing the A3 between the Dennis roundabout and Woodenbridge footbridge, Guildford
Latest updates
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19 March 2026
Getting ready to start concrete repairs - May 2026
The first phase of work will start on Dennis Roundabout in early May to repair concrete to both bridges.
To allow access to all areas requiring repairs, scaffolding will be installed on the verges of the roundabout beneath the bridges.
To provide sufficient working space and to protect both the scaffolding and road users, a lane closure will be required on the west side of the roundabout for the duration of the works.
Unfortunately, the pedestrian footpath at this location will also need to be closed while the works are underway, with a signed diversion via Wooden Bridge footbridge.
The second phase of the works will be on the A3. This work will include:
- refurbishing the bridge decks
- repairing the concrete on the top of the bridges
- re-waterproofing, and replacing bridge joints and barriers
We'll also be resurfacing the A3 carriageway in both directions between Dennis roundabout and the Wooden Bridge footbridge to remove the bumps in the carriageway.
These works are due to start in June. To do them safely, we’ll require a combination of full weekend closures, overnight closures, and 24/7 narrow lanes on the A3.
Weekend closure dates
A3 northbound from Dennis Interchange to Stoke Interchange.
9pm Friday 5 June to 6am Monday 8 June - When the A3 northbound carriageway opens on Monday 8 June there will be 24/7 narrow lanes in place until Monday 20 July.
9pm Friday 17 July to 6am Monday 20 July - To complete waterproofing and the removal of narrow lanes - A3 southbound from Stoke Interchange to Dennis Interchange.
9pm Friday 12 June to 6am Monday 15 June - When the A3 southbound carriageway opens on Monday 15 June there will be 24/7 narrow lanes in place until Monday 13 July.
9pm Friday 10 July to 6am Monday 13 July - To complete waterproofing and the removal of narrow lanes.
Overnight closure dates
Monday to Saturdays, 9pm to 6am starting Monday 8 June to Friday 17 July - A3 northbound from Dennis Interchange to Stoke Interchange
Monday to Saturdays, 9pm to 6am starting Monday 15 June to Friday 10 July. Then Monday 13 July to Friday 17 July - A3 southbound from Stoke Interchange to Dennis Interchange
Project information
The ageing concrete structure of the Dennis Roundabout and the stretch of the A3 that runs over it are both in need of repair.
Our extensive repair project will:
- reduce the need for disruptive maintenance in future
- give drivers a safer, smoother journey
Documents
Traffic information
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