Six people were injured after a pedestrian bridge collapsed onto Interstate 295 in the US capital of Washington, DC on Wednesday.

DC Fire and Emergency Medical Services Department said a hazardous materials response team is mitigating a diesel fuel leak from a truck that was partially beneath the bridge.

"At least 1 other vehicle was struck by debris. Collapse blocks both directions," it said on Twitter.

The incident took place around noon near Kenilworth Avenue and Polk Street./aa