An early morning collision involving a big rig and three vehicles in Modesto closed at least one lane of southbound Highway 99 and backed up traffic throughout the morning.
The accident occurred at around 5:30 a.m., according to officer Eric Parsons of the California Highway Patrol.
According to Parsons, the driver of the big rig didn't see slowed traffic for construction near G Street.
The left and middle lanes were closed for construction.
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The big rig rear-ended a Honda, which then hit two cars in front of it.
The big rig continued into a guard rail.
All lanes were completely blocked at that point but construction finished up and the left and middle lanes were opened.
The right lane was expected to be closed througouht the morning as work was being done on the guardrail.
There was no specific information on injuries, but they were termed as "minor", according to the CHP.
Commute traffic was backed up well north at least into Salida throughout the morning.