The A421 in Bedfordshire is currently closed southbound between the A1 (Black Cat Roundabout) and the A4280 (Great Barford) due to a collision.


Emergency services including Bedfordshire Police are in attendance. National Highways has resources deployed to assist.

Delays are expected on the approach to the closure. Please plan ahead, you may wish to re-route or even delay your journey.

A diversion is available:

Road users are advised to follow the route marked with a solid black triangle symbol on local road signs.

  • Follow the A1 southbound from the Black Cat Roundabout
  • At the roundabout with the A606 (Sandy Roundabout) take the third exit
  • Follow the A603 westbound to the A421 Cardington Cross junction
  • At this roundabout follow the signs to join the A421