CLEVELAND (AP) -- A heavily trafficked Ohio interstate is shut down until further notice after a dump truck traveling with its bed raised slammed into a pedestrian bridge.

Ohio Department of Transportation spokesman Mark Ziaja (ZAI'-uh) says no one hurt when the truck hit the bridge spanning Interstate 90 around 6 a.m. Saturday.

The accident caused part of the truck's bed to flip over while its cab continued on a short distance. Part of the walkway was ripped away from its base.

The interstate is closed in both directions while workers remove the badly damaged bridge. Ziaja says he hopes the interstate will be open in time for the Monday morning commute.

It's unclear why the dump truck's bed was raised.