A lorry fire beneath a flyover has closed a main road leading from the M42 to Birmingham International Airport.
A mechanical fault is thought to have started the fire in a lorry travelling along the A45 at about 1815 BST.
The road has been closed due to fears the fire may have caused structural damage to a bridge at the Catherine De Barnes island in Bickenhill Lane.
A diversion was in place travelling westbound and the road was due to stay closed until midnight, police said.