Parts of the M42 are to be re-surfaced after a crash left diesel on the carriageway.
A lorry collided with a barrier on the northbound carriageway between the off and on slip roads at junction 5, West Midlands Ambulance Service said.
The incident happened at about 2.30am on Wednesday. An ambulance, a rapid response vehicle and an incident support officer were sent to the scene.
A West Midlands Ambulance Service spokesman said: "Initially a lorry was in collision with the Armco crash barrier on the nearside. It left a lamppost with live wires exposed.
"The crash caused significant damage to the cab of the lorry and ruptured the fuel tank which leaked a large quantity of diesel.
"The man driving the lorry was checked over but was uninjured and was left with the police.
"As crews were there, a second lorry crashed into the central reservation and jackknifed. The man driving this vehicle was complaining of minor back pain but chose not to go to hospital.
"The crash happened at an opportune location as traffic was able to be diverted up the off slip and back down on to the motorway using the on slip at the same junction."