National Highways is reminding road users that the M4 north of Bristol will be closed this weekend to demolish the A432 Badminton Road Bridge. 

The M4 will be closed in both directions between junctions 18 (Bath) and 19 (M32) from 7pm Friday 21 March to 6am Monday 24 March.

With 3,000 to 4,000 vehicles using this section of the M4 every hour over peak weekend periods the closure is likely to cause substantial disruption, and drivers are advised, where possible, to avoid the area and plan journeys for alternative times. 

A diversion for westbound traffic will be as follows: 

From M4 junction 18, exit the motorway roundabout to the A46 heading towards Bath 

At the A46/A420 junction just past Pennsylvania take the A420 towards Warmley 

At the A420/A4174 junction in Warmley, take the A4174 towards the M32 

Join the M32 at junction 1 and head to the M4 junction 19 

Follow directions above in reverse for exiting at M4 junction 19 

The eastbound diversion will be in reverse.

The demolition will be noisy, but National Highways will phase the works for safety and to reduce overnight noise where possible.

For safety there will be an exclusion zone in place around the bridge during the demolition work and National Highways is reminding members of the public to not try to access the work site.