(CBS/AP) -- ighway bridge under construction collapsed Tuesday morning in northern California, trapping a Federal Express delivery truck and its driver under the debris.
The FedEx truck could be seen partially crushed under a beam, and a California Department of Transportation vehicle was also damaged. Emergency crews are trying to extricate the driver, who is injured but conscious, the Sacramento Bee reported.
The FedEx truck was the only vehicle trapped by the collapsed bridge, reported the Bee.
A helicopter was at the scene ready to transport the driver to a hospital, said California Highway Patrol spokeswoman Karen Ogle. A FedEx spokesman had no immediate comment.
A CalTrans crew member who was working in the area was airlifted to a nearby hospital for treatment, the Bee reported.
The overpass was part of a $105 million project on Highway 149 to widen the road from two to four lanes, Caltrans spokesman Mark Dinger told the Bee.
Part of the steel vents that were holding up the project came down on the truck, trapping it and the driver, he told the Bee.
"After emergency crews get that man safely out, we will have some more answers about how this could have happened and what we can do to get this roadway open," Dinger told the Bee.
The bridge, at State Routes 149 and 70 north, near Oroville, collapsed at about 7:30 a.m., Ogle said. The area is about an hour's drive north of Sacramento.