GLADWYNE, Pa. (CBS) — The westbound lanes of Interstate 76 are closed in Gladwyne, Pennsylvania, due to a multi-vehicle crash involving a tractor-trailer that killed one person.

The accident happened at about 11:30 a.m. in the westbound lanes just before the Gulph Mills, Route 202 exit.

Pennsylvania State Police officials confirm one person was killed in the multi-vehicle crash. Several other injuries have been reported.

As of 2 p.m., one lane of traffic was squeezing by the accident, but a major traffic back-up stretched from the Roosevelt Boulevard to the Blue Route. Drivers are urged to use alternate routes. View RealTime Traffic for the latest information.

Stay with for the latest on this developing story.

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