M4 major traffic delays caused by M5 crash closure
The incident took place on the M5 just after 3pm, between junction 15 which links to the M4 and junction 14 at Thornbury, and involved a lorry which collided with two other vehicles.
It is believed the lorry was travelling southbound and crossed over the central reservation before crashing into two vehicles on the northbound carriageway.
Traffic was initially blocked in both directions and the northbound carriageway is expected to be closed for some time during a police investigation.
Vehicle recovery and barrier repairs will also be carried out if necessary.