It depends on the height you're falling from. If it's way too high, the person's may crack. If it's not too high, nothing much would happen.
If the car is crushed by the bridge, it is likely that a body in the car would be subjected to blunt force trauma- which is a formal way of saying crushed by the massive weight of the bridge.
It crosses the River Thames.
London Bridge spans the River Thames.
Hudson River
St. Johns River flows under the Buckman Bridge.
The River Thames surrounds the London Bridge in London, England. It is one of the iconic landmarks in the city and crosses the river, connecting the City of London with Southwark.
Hudson river
the hudson river
Lower St. Lawrence River. BAM
The George Washington Bridge traverses the Hudson River. It connects New Jersey to Upper Manhattan.
When a body falls at that speed, chances are great that death will result from serious injuries, like broken bones, internal injuries, and more.
Ohio river