National Highways will be realigning the A1 southbound over a newly built culvert. This will require a closure of the A1 southbound between Wyboston and Tempsford from 9pm Friday 16th to 5am Monday 19th January 2026.
Please use this planned diversion route:
- exit A1 southbound at Wyboston junction
- take A428 towards St Neots
- join St Neots Road southbound towards Tempsford
- re-join A1 at Tempsford junction

Please see the attached map for the diversion route: https://www.richardfuller.co.uk/sites/www.richardfuller.co.uk/files/2026-01/A1%20Southband%20Jan%2026.png