M1 planned maintenance

We regularly maintain the M1 between junctions 6 and 14 each month on pre-planned dates. Work includes surface and technology repairs, drainage and sign cleaning.

Latest updates

  • 11 February 2026

    Planned road closures in February 2026

    Closures and Diversions

    We need these overnight road closures (10pm-5am) for maintenance this month, weather permitting.

    Wednesday 18 February - M1 northbound junctions 9 to 11a

    Diversions:

    • leave the M1 northbound at junction 9 and follow the A5183
    • then take the A505 to the A5
    • re-join the M1 at junction 11a

    If you want to join the M1 northbound at junction 10:

    • you'll be diverted southbound to junction 9
    • from junction 9 follow the northbound diversion

    If you want to join the M1 northbound at junction 11:

    • you'll be diverted by the A505 to join the A5
    • then re-join the M1 at junction 11a

    M1 northbound junctions 9 to 11a diversion map

    Thursday 19 February - M1 northbound between junctions 11a to 13

    Diversion:

    • you'll be diverted via the A5
    • take the A505, and continue on to the A4146
    • then take the A5 onto A4146 (Bletcham Way) 
    • follow the A4146 (Tongwell Street) to Standing Way
    • rejoin the M1 at junction 13
    Friday 20 February - M1 southbound between junctions 13 to 11a 

    Diversion:

    • you'll be diverted via the A5
    • exit M1 junction 13 
    • take Standing Way, then A4146 Tongwell Street and Bletcham Way
    • onto A5 and then A4146, then A505
    • rejoin M1 at junction 11a

    M1 north and southbound between junctions 11a and 13 closure diversion map

    Saturday 21 February – M1 southbound between junctions J11a-J9

    Diversions:

    • leave the M1 southbound at junction 11a and follow the A5
    • continue and join the A505 to the A5183
    • re-join the M1 junction at 9

    If you want to join the M1 southbound at junction 10:

    • you'll be diverted northbound to junction 11
    • then join the A505 to the A5183
    • re-join the M1 at junction 9 southbound

    M1 southbound between junctions 11a and 9 diversion map

    Wednesday 25 February - M1 southbound between junctions 9 and 6a

    Diversion:

    • leave the M1 Junction 9 onto the A5183
    • then onto the A4147
    • onto the A5183
    • onto the A405
    • diversion ends at the M25 Junction 21A

    M1 southbound between junctions 9 and 6a diversion route map

    Thursday 26 February - M1 northbound between junctions 6a and 9

    Diversion:

    • leave the M1 at Junction 6 of the M1
    • onto the A405
    • onto the A5183
    • onto the A4147 
    • back on to the A5183 
    • re-join M1 Junction 9

    M1 northbound between junctions 6a and 9 diversion route map

    Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England site. Our travel alerts give details of live incidents on our network.

See more updates

Project information

Overview

The M1 is a key strategic road, carrying high volumes of heavy goods and other vehicles between London and the North. Many people rely on it very day for work and leisure.

Rather than wait for faults to appear, we plan regular maintenance overnight on specific dates. This helps us keep the road in good condition with less impact on drivers.

Works include:

  • technology repairs
  • drainage work
  • sweeping grass cuttings
  • surface repairs
  • cleaning signs

Documents

Traffic information

Information about scheduled roadworks and events on our motorways and major roads.

Contact us

0300 123 5000

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