A421 upgrade

Diversions and closures

A421 closure dates

There are no scheduled closures at this stage of the project. Sign up for email alerts to get the latest information, including road closures.

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Diversion routes

We will only make closures when the M1 road is open. However, our diversions show the alternative routes for drivers who can’t or who don’t want to use the motorway.

There is a diversion route for drivers who would normally take the A421.A421 closed diversion route This route avoids villages and goes via the A421 Bedford Western Bypass and then the A422 towards Milton Keynes.

There is also a diversion route for those who would normally take the Cranfield Road.Cranfield road bridge diversion

The lorry restrictions remain in place for the local villages.

Temporary closures to public rights of way will be in effect during the work.

Download the cycle diversion route.

We apologise for any inconvenience caused, and thank you for your patience during the roadworks.

Email alerts

Sign up for A421 email alerts to get the latest information on this project and any A421 road closures.

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