HAMMOND, Ind. (CBS) — Major traffic backups along 80-94 near the Indiana-Illinois border continued into the early morning after a chain-reaction crash.

A man had to be airlifted from the scene after he clipped a stopped Indiana State Police squad car and crashed into a semi.

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A trooper was investigating a crash involving a semi and a pickup truck on Interstate 80/94 near Calumet Avenue about 3:15 a.m. when another car clipped his squad car and crashed into the semi, Indiana State Police Sgt. Dwayne Dillahunty said.

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That man had to be airlifted from the scene, and both directions of traffic were closed until 4:30 a.m., Dillahunty said. As of about 4:45 a.m. all westbound lanes and one eastbound lane have been reopened.

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No one else was hospitalized.