M4 between Junctions 16 and 17 to close overnight for year

Summarised from 4 outlets · Updated 30 Oct, 06:06 · Archive

The M4 between Junctions 16 and 17 will undergo geotechnical and maintenance work from October 30, 2026, to October 4, 2027.

National Highways will carry out geotechnical and maintenance work on the M4 between Junctions 16 and 17 from October 30, 2026, until October 4, 2027, lasting up to 18 months.

Overnightly, between 8pm and 6am, both directions of the M4 between the two junctions will close entirely. The eastbound entry slip road at Junction 17 and the westbound entry slip road at Junction 16 will also shut. Vehicles will be rerouted via other M4 junctions and local roads.

During the day, traffic will be slowed to 50mph eastbound from Church Lane overbridge to Junction 16 and westbound from Junction 16 to Olivemead Access overbridge, as well as on the westbound entry slip road at Junction 16. A contraflow system will operate westbound from Olivemead Access overbridge to 800 metres east of Hook overbridge. Vehicles over 2 metres wide will be banned from the outside lane between Olivemead Access overbridge and 800 metres east of Hook overbridge.

Hard shoulder running will be in place throughout the works. All restrictions will be marked by traffic signs, and the speed restrictions will not apply to emergency service vehicles.

National Highways stated that the measures are to ensure the safety of both road workers and the public. Further details are available from Project Manager Richard Williams at National Highways Ltd, Brunel House, 930 Hempton Court, Aztec West, Almondsbury, Bristol, BS32 4SR, or by calling 0300 470 4285.

How it is being reported

• M4 between Junctions 16 and 17 faces year-long restrictions and overnight closuresThe M4 motorway between Junctions 16 and 17 is set for speed restrictions, contraflows, and overnight closures for nearly a year.Gazette & Herald · 30 Oct, 05:00
• M4 between Junctions 16 and 17 faces year-long restrictions and overnight closuresThe M4 motorway between Junctions 16 and 17 is set for speed restrictions, contraflows, and overnight closures for nearly a year.Swindon Advertiser · 30 Oct, 05:00
• M4 between Junctions 16 and 17 faces year-long restrictions and overnight closuresThe M4 motorway between Junctions 16 and 17 is set for speed restrictions, contraflows, and overnight closures for nearly a year.Wiltshire Times · 30 Oct, 05:00
• M4 between Junctions 16 and 17 faces year-long restrictions and overnight closuresThe M4 motorway between Junctions 16 and 17 is set for speed restrictions, contraflows, and overnight closures for nearly a year.This Is Wiltshire · 30 Oct, 05:00

In this story: National Highways · M4 · Richard Williams

This summary was written by AI from the headlines and standfirsts above, and states as fact only what at least two outlets report. How we use AI · Report a problem · Corrections log