The 57 Freeway transition in Glendora reopened early Thursday morning after was closed when diesel fuel spilled onto the road, authorities said.
The spill was reported just after 1 a.m. on the northbound 57 Freeway transition to the westbound 210 Freeway, according to the California Highway Patrol.
About 100 gallons of diesel fuel spilled after the big rig's tank ruptured, according to the CHP.
No injuries were reported.
CalTrans crews responded to the scene to clean up the spill.
All lanes on the northbound 57 Freeway were reopened around 6:30 a.m., according to the CHP.
