Updated at 12:46 p.m.

A woman died after the car she was driving east along Interstate 66 collided with the back of a tractor trailer parked on the right shoulder of the highway, authorities said.

The crash happened just before 2 a.m. near US 29, according to Virginia State Police.

Officials said the flatbed tractor-trailer was parked on the right shoulder and didn’t have its lights on at the time. The driver was asleep in the cab of the truck.

Police said the woman was driving a 2008 Chevrolet Cobalt. When she hit the back of the truck, the collision started a small fire.

The driver was pronounced dead at the scene; police didn’t release her name, pending the notification of her relatives.

The 35-year-old driver of the truck was not injured.

The crash is under investigation.

Some lanes of the highway were closed in the morning rush hour.

Updated at 10:31 a.m.

All lanes of Interstate 66 east have reopened after a fatal crash near US 29, officials said.

Updated at 7:03 a.m.

A vehicle rear-ended a tractor-trailer along Interstate 66′s eastbound side early Tuesday, causing the vehicle to catch fire and killing one person, officials said.

The crash happened just before 2 a.m. near US 29 in Fairfax County.

Virginia State Police said the vehicle rear-ended the tractor-trailer and “the impact of the crash caused the car to catch fire.”

Delays are building and reaching up to nine miles at one point.

The crash remains under investigation, and police did not release the victim’s name, pending the notification of relatives.

Original post at 6:10 a.m.

Drivers should expect delays after a crash along the eastbound side of Interstate 66 in Fairfax County.

Officials with Virginia’s Department of Transportation said there will likely be closures throughout the morning, as crews are on the scene. Delays of up to nine miles are reported in the area.

A serious crash has closed part of I-66 east in Fairfax County. (VDOT/VDOT)

The crash happened near US 29.