The A1 northbound between Tempsford and Wyboston and the A421 eastbound between Renhold and Black Cat will be closed from 9pm on Friday 24th July until 5am on Monday 27th July and the A1 Northbound will be closed between 9pm and 5am at Black Cat junction and from Tuesday 28th July to Friday 7th August for the construction of the new central reserve.
Please follow the planned diversions.
A1 northbound:
- exit A1 northbound at Tempsford interchange onto St Neots Road
- take A428 towards St Neots
- re-join A1 northbound at Wyboston interchange
A421 eastbound:
- exit A421 at Cardington onto A603
- follow A603 towards Sandy
- join A1 northbound at Sandy roundabout
Additionally, the A1 northbound will be closed between 9pm on Monday July 27th until 5am on Tuesday July 28th and between 9pm and 5am at Black Cat junction from Tuesday 28th July to Friday 7th although by then a different diversion will be in place as follows due to the reopening of the A421 eastbound:
- head west along A421 towards Bedford
- exit A421 westbound at Renhold interchange
- loop back on A421 eastbound towards Black Cat
Keep up to date with all Black Cat related closures and diversions at the dedicated National Highways site: https://nationalhighways.co.uk/our-roads/a428-black-cat-to-caxton-gibbet/
