A1(M) junction 35 to 37 concrete barrier

We’re carrying out essential upgrade work to the safety barriers on the A1(M) between Wadworth and Marr and to the drainage, improving safety for drivers.

Start date 27 April 2020
End date December 2020
Cost £6.5m

Latest updates

  • 24 August 2020

    Narrow lanes now in place

    Narrow lanes are now in place on the A1(M) between junctions 35 and 37 with a 40mph speed restriction so barrier work can be completed during the day (8am until 6pm).

    As a result the northbound entry slip road from Wadworth roundabout (M18 southbound to A1(M) northbound) has been closed for the safety of drivers.

    This is because there isn’t enough room for traffic to merge into the narrow lanes as well as traffic joining the A1(M) using the free-flow link.

    Drivers are being diverted down to junction 34 at Blyth to then travel northbound. This will be in place until the narrow lanes are removed in November.

    We will also have a number of overnight closures for deliveries and also to lift the precast permanent barriers into place. Further details will be provided shortly. 

  • 01 July 2020

    Additional closures no longer needed

    During the two weekend closures we had in May and June of the northbound carriageway we completed a 500-metre section of concrete safety barrier at the northern end of the scheme. We’ve also completed some nearside verge drainage work.

    We had three more closures planned for July to carry out the same work on the southbound carriageway at the southern end of the scheme. We’re pleased to confirm that work has progressed so well that we no longer need these additional closures.

    Instead we can keep the route open for you using narrow lanes with speed restrictions for safety.

    We’ll install the narrow lanes around the end of July, beginning of August for approximately 12-weeks with a camera enforced speed limit of 40mph.

    For safety and to minimise disruption we’ll be working between 8am and 6pm during the day with limited intermittent overnight closures for deliveries and to remove materials.

    Clearly signed diversions will be in place agreed with local authority and police.

  • 28 April 2020

    Work begins

    We started work on 27 April 2020 and expect the scheme to last about seven months.

    To keep the period of work to a minimum traffic management will be permanently set for the duration of the scheme to narrow lanes with a 40mph speed limit enforced by speed cameras.

    For safety and to minimise disruption we’ll be working between 8am and 6pm during the day and overnight between 9pm and 6am between Monday and Thursday and between 10pm and 6am on Fridays.

    We’ll need to fully close the road for several weekends to install 500 metre sections of the concrete barrier at junctions 35 and 37. Full closures will start at 10pm Friday and end at 6am Monday morning.

    Planned weekend closures

    The northbound carriageway will be closed from junction 35 past junction 36 on:

    Friday 29 May to Monday 1 June

    Friday 12 June to Monday 15 June

    Friday 19 June to Monday 22 Jun


    The southbound carriageway will be closed between junctions 35 to 34 on:

    Friday 10 July to Monday 13 July

    Friday 17 July to Monday 20 July

    Friday 24 July to Monday 27 July


    There will be limited intermittent overnight closures for deliveries and to install and remove traffic management.

Project information


We’re removing the life-expired steel central reservation barrier along this motorway section of the A1. The existing barrier will be replaced with 4,600 metres of concrete safety barrier and 370 metres of steel barrier protecting bridge supports with 1,550 metres of new central reservation drainage.

This work will improve safety for drivers travelling along the route.

The current steel safety barrier along the route is nearing its end of life and needs upgrading. 

The replacement barrier will provide better protection, it will need less maintenance and is more durable. The drainage work will reduce the amount of surface water improving safety and providing better journeys for road users. 


Traffic information

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

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