A3 Guildford air quality improvements

Start date Autumn 2023

End date Autumn 2024

Cost TBC

Latest updates

31 May 2024

Survey and monitoring work continues

We’ve been assessing potential options to address air quality issues on this stretch of the A3 at Guildford to ensure our solution provides the greatest benefits.

We’re continuing to survey andmonitor the diffusion tubes along the route to measure levels of nitrogen dioxide. Diffusion tubes are scientific devices that enable us to passively sample and measure the concentration of nitrogen dioxide.
17 August 2023

Air filtration cube trial update

We’ve been working with a research partner on the proposed trial of air filtration cubes in Guildford. We’re really disappointed to announce that we now won’t be able to run the trial this autumn due to commercial changes within this partner organisation.

We’re continuing with other work to better understand air quality issues along the A3 from the junction with Manor Road to the Dennis Roundabout/Wooden Bridge junction.

See more updates

Project information

We’re doing surveys and fitting diffusions tubes to measure levels of NO2. We’re also be investigating the movement of air, and the impact of existing fences on the spread of pollutants.

We're looking specifically at the section of A3 through Guildford from the existing junction with Manor Road (to the south) to the existing Dennis Roundabout / Wooden Bridge junction (to the north).

Air Quality Monitoring to date has shown that the A3 at Guildford suffers from some of the highest levels of NO2 on the Strategic Road Network.

Our study aims to understand the air quality issues in this area and explore the case for positive interventions.