A driver had to be cut free from her overturned car after crashing into street furniture on Hammersmith Bridge.
Three fire engines carrying 14 firefighters were called to the suspension bridge in Hammersmith at 4.08pm on Tuesday (February 17).
They freed the 66-year-old using hydraulic cutting equipment.
Paramedics from the London Ambulance Service also attended.
An LAS spokeswoman said the driver was collared and put on a spinal board before being taken to St Mary's Hospital, in Paddington.
The spokeswoman added: "They couldn't see any visible injuries so it was more as a precaution."
The London Fire Brigade tweeted urging motorists to avoid the area because of heavy traffic following the collision.
Other twitter users described the crash as "horrific" and "serious".
More as we get it.