Important roadworks information: A1(M) junction 9, Letchworth Gate and junction 10, Stotfold Interchange

Published: 28 February 2023

osures and diversions

Some of the work will be carried out under lane closures, however there will be some full closures needed and traffic will be diverted as detailed below:

A1(M) junction 10, Stotfold Interchange northbound entry slip closure

Sunday 5 March to Tuesday 7 March (3 nights)

Traffic will be diverted onto the A1(M) southbound towards junction 9 Letchworth gate, exit and re-join the A1(M) northbound.

A505 Letchworth Gate closure
Thursday 9 March (1 night)

Traffic wishing to reach the A1(M) will travel along the B656 through Baldock to join the A505, returning to the A1(M) junction 9. (See diversion map)

A1(M) junction 10, Stotfold Interchange northbound exit slip closure

Monday 13 March to Tuesday 14 March (2 nights)

Traffic will continue north on the A1 to the Biggleswade South Roundabout and return southbound to exit at the A1(M) junction 10.

A map of the diversion can be found above

How to find out more

To find out more about road improvements we’re carrying out across the East of England, please visit our website at

If you would like more information, please contact us on 0300 123 5000, or by email at