The M48 Severn Bridge has been shut down in both directions due to a serious incident led by the police, causing potential delays for drivers.

A stranded individual stuck in the traffic reported a standstill in both directions, with a long line of cars waiting on the eastbound side for almost an hour.

National Highways has recommended using the M4 Prince of Wales Bridge as an alternate route while the closure of the M48 Severn Bridge, initiated by a police incident, is anticipated to last until around 1 am.

According to National Highways, the situation is expected to clear by 00:45 to 01:00 on May 29, 2026.

Traffic is currently being redirected via the M4 Prince of Wales Bridge, and National Highways has advised considering this route as an alternative.

The closure of the M48 Severn Bridge, enforced due to an ongoing police incident, is being managed by Avon & Somerset Police, with support from National Highways Traffic Officers and local crews.

National Highways has informed that traffic conditions are not likely to improve until after midnight, with normal conditions expected between 00:30 and 00:45 on May 29, 2026.

A traffic map displays a significant closure across the M48 Severn Bridge due to a police incident.

Inrix has issued a statement indicating the closure of the M48 in both directions between J1 A403 (Aust) and J2 A466 Wye Valley Link Road (Chepstow) due to a police incident, causing traffic to be held at 19:50.

Drivers are advised to anticipate delays around the M48 Severn Bridge this evening as trapped traffic starts to be released.

The M48 Severn Bridge closure in both directions is a result of a police-led incident, prompting drivers to consider using the M4 as an alternative route.