SAN JOAQUIN COUNTY (CBS13) — A deadly crash blocked lanes on northbound Interstate 205 between Tracy and Lathrop Wednesday morning.

The crash happened just before 6 a.m. near the I-205 and Interstate 5 connector.

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California Highway Patrol says a vehicle was apparently trying to go into the right lanes when it clipped a big rig – sending the small vehicle over the guardrail. The car then continued down 30 feet, landing at a scaffolding site on the northbound portion of I-5.

The driver of the car was pronounced dead at the scene, CHP says, despite bystanders rushing to try and help him. He was the only person inside the vehicle.

A SigAlert was issued for the area as several lanes were blocked due to the crash, but was traffic still flowing as drivers were being directed through the center median.

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All lanes were reopened around 10 a.m.