Updated 08/08/16 – 10:04 a.m.

CHICAGO (CBS) — Inbound and outbound lanes of the Bishop Ford Freeway have reopened, about five hours after a lumber truck crashed and spilled its load, blocking traffic in both directions.

READ MORE: Chicago Animal Care To Give Away Free Pet Vaccines And Microchips

The truck crashed and rolled over around 4:40 a.m. in the southbound lanes near 159th Street.

Lumber spilled into the northbound lanes, as the flatbed trailer blocked southbound traffic.

READ MORE: Good Samaritan's Car Stolen As He Helps Victims Of Three-Car Crash

The truck, owned by Cook County Trucking Co., was hauling approximately 48,000 pounds of lumber at the time, worth about $10,000. A company spokesman said the driver was not injured

One southbound lane reopened around 8:15 a.m., and traffic in both directions reopened around 9:40 a.m.

MORE NEWS: Security Guard Shoots Man Who Pulled Gun When Asked To Pay For Snacks At Englewood Gas Station

The trucking company said it was investigating the possibility of an equipment malfunction, but the cause of the crash has not yet been determined.