A crash involving a big rig prompted the closure of the westbound San Bernardino (10) Freeway in the Pomona area Thursday.
The crash was reported about 8 a.m. near Towne Avenue, according to the California Highway Patrol.
The westbound lanes were closed while crews worked to clear the scene. About 10:20 a.m., some lanes were reopened, but the cleanup effort was continuing, the CHP reported.