Addenbrooke’s roundabout

Addenbrookes1

Work on the Addenbrooke’s roundabout started on Monday 12 May 2025 and will run until early July 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.

Further work is due to take place on the Fendon Road arm of the roundabout later this summer.

Update w/c 30 June 2025

Our programme of work at Addenbrooke’s roundabout continues to progress well, with the first phase due to be completed in early July as planned.

Over the last week, the team has finished construction of the kerb and completed the installation of the ducting for Light Blue Fibre as part of Cambridgeshire County Council’s Dig Once policy.

Separately Cambridge Water have also repaired their damaged water pipe on site which was unrelated to our works.

Over the coming days, the widened section of the carriageway will be resurfaced and new signage and illuminated directional and safety signs will be installed.

We are due to return to the roundabout to start phase 2 of the works in August, pending co-ordination with Cambridgeshire County Council Street Works team. The machinery and barriers will be removed but the temporary traffic lights will remain. We’ll be in touch with you again ahead of the second phase starting but in the meantime please do contact us if you have any queries.

Once again, many thanks to everyone living near, working at, or travelling around the roundabout for your patience whilst phase 1 of these important safety works has been completed.

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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.

Addenbrooke’s roundabout updated design

Addenbrooke’s roundabout consultation documents