(Photo: ABC7 News)

This story has been updated.

All lanes of the Inner Loop of the Beltway near Forestville have reopened after a fiery three-vehicle crash involving a tractor trailer that left one person dead and another seriously injured. The wreck sparked a large brush fire on D'Arcy Road, police said.

The accident shut down lanes of the Beltway, causing major delays, until around 11 a.m. Wednesday. At 7:20 a.m., the D'Arcy Road overpass was reopened after safety inspectors deemed it OK.

Police say a tractor trailer hit a car, a minivan and the pillar for the D'Arcy Road overpass and then caught on fire about 11 p.m. Tuesday. Flames then spread to the undercarriage of the bridge. Police say portions of the bridge were significantly damaged by the fire and the crash.

Police say the sequence of events are still unclear, but sources tell ABC7 News that a car hit an unoccupied van that was disabled on the side of the road. The tractor trailer, carrying a load of sugar, swerved to avoid the accident and hit the pillar for the D'Arcy Road overpass and then burst into flames.

The driver of the tractor trailer died. Police say he was trapped inside the cab of the truck as it was engulfed in flames. Another person was injured in the accident. They were taken to a local hospital with serious but non-life threatening injuries. 

The victims' identities have not been released.

State Police investigators are still interviewing witnesses and collecting evidence.