UPDATE: Fuel Spill Blocks All Westbound I-66 Lanes at I-495

Update: 2:33 p.m.

Virginia State Police received a call at 11:10 a.m. to westbound I-66, west of I-495.

Two vehicles collided in the westbound lane, said Corinne Geller, a spokesperson for state police. One of the vehicles began leaking fluids, which caused two more vehicles to lose control and spin out. The vehicles then struck the Jersey wall. No serious injuries have been reported.

Original Post:

A fuel spill at Interstate 66 is blocking all westbound I-66 lanes, causing major delays.

VDOT reported that a vehicle accident has dumped fuel on I-66 West at mile marker 64.5 near I-495. Fairfax County said motorists can't access I-66 West from I-495's inner and outer loops. Cars are backed up two miles to Route 267. 

Delays start past Route 7 on the outer loop. Inner loop delays begin about a mile out at Route 50, according to Fairfax County.