EXPOSITION PARK (CBSLA) — The driver of a United States Postal Service semi-truck was taken to the hospital in critical condition following a multi-car crash on the 110 Freeway.

The semi-truck left the southbound lanes of the 110 Freeway after being struck and landed below, near 37th and Flower streets.

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The driver, identified as a 50-year-old man, was briefly stuck in the tractor cab of his big rig before being freed by Los Angeles Fire Department crews and taken to the hospital.

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Firefighters were remaining on scene at 37th and Flower streets to contain a minor fuels leak.

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Some southbound lanes of the 110 Freeway at Martin Luther King Jr. Boulevard were closed.