Addenbrooke’s roundabout

Addenbrookes roundabout aerial view

Work on the Addenbrooke’s roundabout safety improvements started on Monday 12 May 2025.

The works aim to improve safety for people walking and cycling and provide a much easier to navigate roundabout with less risk to all users. 

The central island of the roundabout will be reduced to allow for the carriageway to be widened, which in turn will allow for paths and crossings to be widened for people walking and cycling.

The work will begin with overnight single-lane closures to allow traffic to continue to flow whilst works are completed. The roundabout will remain accessible from all directions during the works, and emergency services will not be affected.

Update: w/c 11 August

Over the past week the team have completed excavations between Fendon Road and Hills Road, marking an important milestone in this phase of work. Tactile paving installation is underway, and drainage and gully installations are progressing, while kerb and edging works are now 85% complete. Ducting installation also continues on schedule.

The temporary traffic signals are still in place and are effectively managing traffic flow, with no issues being reported. Traffic management continues to be in place overnight to maintain the site team’s safety and is removed during daylight hours to allow traffic to use the roundabout normally.

Looking ahead, the focus will be on completing the new kerb line installations and finishing the drainage system. With major excavation works complete and supporting infrastructure well advanced, the project remains on track for its next stages.

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Designs

addenbrookes diagram

The designs reduce the size of the central island to accommodate the upgraded walking and cycling links, while retaining the width of the lanes in the road for motorised vehicles, with the roundabout being used at all times by emergency services.

The design reflects consultation feedback, with the reintroduction of the informal crossing point on the Fendon Road arm and an enhanced two stage crossing of the southern arm of the roundabout.

It's intended that the scheme will be implemented by the end of 2025, and on this basis it’s secured additional funding from our partners at the Cambridgeshire & Peterborough Combined Authority.

The consultation feedback report and updated design plans can be found below.

Pedestrian diversion July 2025

Addenbrooke’s roundabout updated design

Addenbrooke’s roundabout consultation documents