All the lanes of the southbound 55 freeway at the connection to the 73 in Costa Mesa were closed Tuesday afternoon after a truck crashed into the center divider and spilled gravel and fuel on the highway.

The crash was reported at about 11:40 a.m., according to the California Highway Patrol. At 11:53 a.m. a SigAlert was initially set for 90 minutes for all southbound lanes and one lane of the northbound side where the engine of the truck came to a rest on its side. CHP later extended the closure and estimated roads would open at about 3 p.m.

Oil also spilled on some of the lanes. Crews were responding to clear the area.

The condition of the driver was not immediately available but firefighters were seen treating someone on scene.

Traffic was being diverted onto the 73 freeway.