PHILADELPHIA (CBS) — An accident involving a taxi shutdown both lanes of the Platt Bridge for about an hour Tuesday morning.

The accident happened at about 6:30 a.m. in the westbound lanes of the Platt Bridge.

According to investigators, the accident involved a taxi cab. It was not immediately known if there were other cars involved.

There were no immediate reports of any injuries.

As a result of the accident, crews were forced to close the eastbound lanes as well. The lanes were reopened at about 7:30 a.m., but a residual traffic back-up remained.

The accident remains under investigation.

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