The A1 is set to close in both directions this weekend between Tempsford and Black Cat roundabout in Bedfordshire, as work continues upgrading the route. National Highways is progressing well on the scheme to upgrade the route between Black Cat roundabout in Bedfordshire and Caxton Gibbet roundabout in Cambridgeshire, which started construction in late 2023.
Ultimately, the A1 carriageway will be become free flowing and lowered to create a three-tier junction.
This weekend’s closures will take place from 9pm Friday 19 to 5am Monday 22 September 2025.
Northbound traffic will be diverted off the A1 at Tempsford onto St Neots Road and joining the A428 at St Neots re-join the A1 northbound at the Wyboston junction
Southbound traffic will use the same diversion route in reverse.
Paul Salmon, National Highways Senior Project Manager, urges people to plan their journeys if using the A1 through Black Cat roundabout this weekend:
“We’re continuing work this weekend to build a new culvert beneath the A1 carriageway near the Black Cat roundabout. If you’re planning to travel through the area, please check the diversion route in advance and allow extra time for your journey.”
“This is a major project, and we’re making great progress. Once complete, the upgrades will deliver quicker, safer, and more reliable journeys for motorists across Bedfordshire and Cambridgeshire.”
(Pic: National Highways)
