Guildford traffic hotspots scheme at A331 junction with A31, Tongham

Update 6 October

Due to the weather these closures will now start from 7 October for 12 nights.

The A331 southbound towards the roundabout and the A31 Slip eastbound towards Guildford will be closed from 7 October, 8pm to 6am, for 12 nights Monday to Friday only.

Works are progressing as expected. We have completed approximately 30% of the project so far and we are on target to complete by the end of March 2022.

Update 24 August

Road closures from 3 September for 3 weeks

Friday 3 Sept to Sunday 5 Sept. Weekend closure from 8 PM Friday 3 September night on slip road onto A31 (towards Guildford Eastbound) to 6 AM Sunday 5 Sept.

Monday 6 Sept to Friday 17 Sept. Weekday night closures (8 PM until 6 AM) on slip road onto A31 (towards Guildford Eastbound)

Saturday 18 Sept to Monday 20 Sept. Weekend closure from 8 PM Saturday 18 September night on slip road onto A31 (towards Guildford Eastbound) until Monday 20 September at 6 AM.

Start date 26 July for 35 weeks

We are building a new lane from the A331 after the roundabout towards the A31 for Guildford bound traffic. The project is due for completion at the end of March 2022.

In 2018 Guildford Borough Council identified three key junctions as traffic 'hotspots' where peak time queues cause significant delays. The Guildford Hotspots project aims to reduce traffic congestion at these 'hotspots.' One of these junctions was the A331 roundabout.

The works will include new signal crossings and improvements so the cyclists and pedestrians using the Christmas Pie cycle route can easily and safely cross the slip road which are currently difficult to cross.

The proposals will also include resurfacing and new Anti-skid material on the approaches to the signal crossings, the lighting will be upgraded and the drainage improved, the drainage improvements will use SUDS (sustainable urban drainage systems), capturing the storm water from the road, slowing and treating this flow to lessen the impact of storms on the drainage system. The SUDS proposals also include for a Pond / Wetland area which will improve water quality and improve biodiversity

The next phase of the works will provide the new lane from the A331 after the roundabout towards the A31 for Guildford bound traffic. The proposals also include new signal crossings and improvements so the cyclists and pedestrians using the Christmas Pie cycle route can easily and safely cross the slip road which are currently difficult to cross.

The proposals will also include resurfacing and new Anti-skid material on the approaches to the signal crossings, the lighting will be upgraded and the drainage improved, the drainage improvements will use SUDS (sustainable urban drainage systems), capturing the storm water from the road, slowing and treating this flow to lessen the impact of storms on the drainage system. The SUDS proposals also include for a Pond / Wetland area which will improve water quality and improve biodiversity

Project overview

In 2018 Guildford Borough Council identified three key junctions as traffic hotspots where peak time queues cause significant delays. A hotspot is a junction that has insufficient capacity for the volume of traffic using it and has an adverse impact on the efficiency of the highway network in a wider area. The Guildford Hotspots project aims to reduce traffic congestion at these hotspots. One of these junctions is the A331 and A31 junction in Tongham.

This junction is located at the southern end of the Blackwater Valley. It involves the construction of a slip lane for vehicles travelling southbound on the A331, wishing to travel eastbound on the A31, removing the need for them to use the roundabout. The roundabout will be part signalised and incorporate improved facilities for pedestrians and cyclists, thus supporting vulnerable road users.

Preparation works

The first phase of the improvement works at this junction were completed earlier in the year, this included detailed surveys, clearance works, providing site access and preparation of the compound areas.

These works were carried out in advance as the detailed design was being completed and the works planned, it also provided the ideal opportunity to undertake these works with the minimum environmental impact (such as not disturbing nesting birds), environmental surveys identified that whilst there weren't any protected species within or immediately adjacent to the site, however animal tracks including badgers had been identified nearby so protection works were also installed to prevent badgers creating new setts within the site area.