A46 package – Cold Ashton roundabout to London Road junction roundabout

We're investing almost £6million to improve the A46 north of Bath between London Road junction roundabout and Cold Ashton roundabout.

Start date 18 January 2026

End date

Cost £6million

How we'll work

To work safely, we’ll mainly use combinations of lane closures and weeknight full closures.

Where needed, we'll put signed diversions in place.

We'll give details of where we're working and the traffic management we're using on this page.

We’re resurfacing and improving road markings between Upper Swainswick and Nimlet.

Closed overnight (8pm-6am), Monday to Friday.

North and southbound diversion by:

Please follow diversion signs and do not rely on sat-navs.

Please remember that closures can change at short notice. You can find the latest information on our daily closures page or check for current incidents, disruptions and delays. Our travel alerts give details of high priority incidents on our network.

The A46 is part of our south western strategic road network - a vital link between Bath and the M4.

It connects the south coast with Bristol, Bath and London, as well as carrying local traffic.

Our improvements will make journeys safer, smoother and more reliable. They'll also reduce the need for future unplanned closures.

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

info@nationalhighways.co.uk

0300 123 5000

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