Expect overnight closures on A421 and A1, Bedford drivers are warned
Drivers in and around Bedford will have seven National Highways road closures to watch out for this week.
And one of them is expected to cause major delays – with motorists facing a holdup of at least 30 minutes. Another three will cause moderate delays of between 10 minutes and half an hour.
The latest expected works list, with notes from National Highways, shows that four closures already in place are expected to carry on this week:
• A1, from 8pm to 6am until February 28, 2026, moderate delays (10-30 minutes): A421 both directions, Marsh Leys to Black Cat roundabout – carriageway closures due to white lining/road markings works on behalf of National Highways


• A421, from 5am to 11.59pm until March 31, 2027, slight delays (under 10 minutes): A421 eastbound, Renhold to Black Cat roundabout – lane closure for bypass/new on behalf of National Highways
• A1, from midnight to 11.59pm until March 31, 2027, slight delays (under 10 minutes): A1/A421 both directions, all approaches to Black Cat roundabout – narrow lanes for bypass construction on behalf of National Highways
• A1, from 5am to 11.59pm until April 30, 2027, severe delays (more than 30 minutes): A1 both directions, Black Cat roundabout – north quadrant closure for bypass construction on behalf of National Highways
And a further three closures will begin over the next two weeks:
• A1, from 9pm January 8 to 5am January 10, moderate delays (10-30 minutes): A421 westbound, Black Cat to Renhold – carriageway closure for carriageway reconstruction/renewal on behalf of National Highways
• A1, from 8pm January 12 to 6am January 14, moderate delays (10-30 minutes): A421 eastbound, A600 to Black Cat – carriageway closure for carriageway reconstruction/renewal on behalf of National Highways
• A421, from 8pm January 12 to 6am January 13, slight delays (under 10 minutes): A421 westbound, A421/A600, junction to A421/A6, junction – lane closure due to carriageway reconstruction/renewal works on behalf of Ringway