SAN DIEGO (KGTV) – A spill of an unknown substance on Interstate 15 in the Mission Valley area blocked multiple lanes and caused a major traffic backup Wednesday morning.
Just after 8 a.m., the California Highway Patrol reported a spill on northbound I-15 near the Friars Road exit. The material was described by the CHP as a muddy grease, and the incident prompted a response from a cleanup crew.
Three left lanes were shut down as crews worked through the morning to clean the affected roadway.
As of 2 p.m., Caltrans says that lanes 1, 2, and 3 are open. Lanes 4 and 5 are still closed for cleaning.
The circumstances that led to the spill were unknown.
