CNN
A bridge in the US city of Pittsburgh has collapsed with six vehicles, including a bus, on it at the time.
No deaths have been reported. Officials said 10 people sustained minor injuries, three of whom were taken to hospital.
The snow-covered Forbes Avenue Bridge gave way on Friday morning, sometime after 06:00 local time (11:00 GMT).
The collapse happened just hours before President Joe Biden visited the area to talk about infrastructure.
Fire Chief Darryl Jones said first responders used ropes longer than 100 feet and formed human chains to pull victims to safety. Search dogs and drones were also spotted on the scene.
A nearby resident told the KDKA-TV local news channel that the incident “sounded like a huge snow plow… pushing along the surface with no snow”.
Residents have been asked to avoid the area after public safety officials confirmed they had to shut off a leaking gas line that goes under the bridge. A strong smell of natural gas is being reported in the area.
It remains unclear what caused the city-owned bridge to cave in. Pittsburgh Mayor Ed Gainey said it had been inspected as recently as September, but a 2019 assessment revealed its structure was deteriorating.
The steel bridge, built in 1970, is a common route for motorists into downtown Pittsburgh.
Federal transportation officials say about 45,000 US bridges – including more than 3,000 in Pennsylvania – are in poor condition.
In November, President Biden signed legislation into law that includes $110bn (£82bn) to repair and rebuild roads and bridges.
