A1 closed this weekend

A1 diversion map

National Highways have informed Richard that in order to install a culvert close to the A1 carriageway they will be closing the A1 in both directions between Tempsford and Black Cat roundabout this weekend from 9pm on Friday 7th November to 5am on Monday 10th November 2025.

The diversion is as follows:

If you are heading northbound:

  • leave the A1 at Tempsford
  • head north on Tempsford and St Neots Road
  • then head west on the A428 to rejoin the A1. 

If you are heading southbound, follow the diversion in the opposite direction.

May be an image of map, road and text that says "Eaton Socon C A428 Wyboston PR মাশ A1 A1 Chawston Barford Road 4421 A1 Roxton A1 Tempsford Church Tempsford Road - Road Closure Diversion"

You may also be interested in

The Black Cat Roundabout

The redevelopment of the Black Cat roundabout is an enormous engineering project that will allow North/South and East/West traffic flow without having to slow down or stop at the roundabout.  Planning consent for the project was granted in August 2022 but a legal challenge initially delayed the

A1, A421 and Bedford Road road closures this weekend

National Highways have advised Richard that the following roads will be closed from 9pm Friday 21 to 5am Monday 24 August for the installation of a new road layout at Black Cat junction:A1 northbound between Tempsford and Black Cat A1 southbound between Wyboston and TempsfordA421 westbound betw