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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 21 July

Last week, the Fendon Road island was resurfaced and the pedestrian diversion was put in place, while temporary traffic signals were repositioned for the work on the island without affecting the existing temporary signal system, which will remain in place throughout phase 2.

Traffic management remains in place overnight to enable the site team to work safely with the carriageway reopened each morning, when all traffic management equipment is removed to allow traffic to use the roundabout normally during the day.

This week, the site team will continue to work on the section of the roundabout between the Fendon Road arm and the Hills Road arm leading into the city. They’ll be carrying out a CCTV survey of the gullies in this area and clearing vegetation, as well as continuing with excavation and installing kerbs and drainage.

Towards the end of this week, working with Camcycle, the memorial bike will be repositioned to keep it safe whilst the works are underway.

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