Dear customer
A417 Missing Link – Temporary changes to the network
Kier Infrastructure is working on behalf of National Highways to improve the existing A417 Missing Link.
We’re writing to inform you that we will be moving traffic to a temporary route on the A417 near Gloucester between the A46 Brockworth interchange and the former Cowley roundabout this summer.
This is a key milestone, which includes permanently closing the existing A417 between Air Balloon and Ullenwood roundabout and the existing B4070.
New temporary route from Monday 29 June 2026
The new section of the A436 and A417 will be open to traffic from 6am on Monday 29 June.
The road will look and feel different, with narrower lanes and a 40mph speed limit in place. The A417 will be reduced to one lane in both directions between A46 Brockworth Junction and Air Balloon roundabout. This is to allow us to work in new areas and complete the construction of the road.
Switching traffic onto this new section of road enables us to keep the road open for the traveling public, protect workers and minimise disruption.
This will be a significant change for road users. To help make things clearer, please visit our project webpage nationalhighways.co.uk/a417-missing-link, which includes diagrams and guidance on how to use the new road layout.
We're expecting this work to cause significant delays in the area and advise drivers to plan their journeys in advance and allow extra time.
The temporary route will be in place for at least five weeks and the date could be subject to change depending on weather or unforeseen circumstances.
Following the temporary traffic switch, we will be able to move traffic onto the new A417, which will become the permanent route. We will provide more detailed information closer to the time.
Throughout June, we will publish walking route diagrams and other materials to help you use the temporary route with confidence. We encourage you to share these with others who may find them useful.
Upcoming Closures
There will be overnight and weekend closures to enable us to complete work for the new temporary route opening:
Thursday 25 June – overnight closure
The A417 will be closed in both directions between the A46 Brockworth junction and the Air Balloon roundabout overnight from 9pm on Thursday 25 June to 6am Friday 26 June.
Friday 26 – Monday 29 June - weekend closure
The A417 will be closed in both directions between the A429 Burford Road and the Air Balloon roundabout from 9pm on Friday 26 June to 6am Monday 29 June.
Fully signposted diversion routes will be in place during the closure. Please follow the official, signed diversion route and not satnav. Access for emergency services will be fully maintained during the closures.
Please check the National Highways website for updates and other works in the region.
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