One lane is closed on the M5 in Gloucestershire in both directions between junction 12 for Quedgeley and 13 for Stroud after an accident involving two cars and a caravan.
It happened on the southbound side at 5.30am and one of the cars crossed over to the northbound carriageway.
Two lanes re-opened southbound at 10am but there is major congestion as a result of the crash.
There are queues southbound back to junction 11A for the Brockworth bypass and onto the A38.
More top news
Ofsted unveiled a damning report today which uncovered "serious and widespread failures" when it comes to looking after vulnerable children.
A 20-year-old skier from the University of Bath has won a bronze medal in aerial skiing at the World Junior Championships in Italy.
A ban on growing genetically modified crops is to be lifted next week. But opponents say it could threaten the future of organic farms.