Tysons, VA

(Updated at 2:45 p.m.) An accident on the Beltway just north of Tysons has northbound traffic cut down to just 1-2 lanes as crews work to contain a large diesel spill.

The incident occurred around 1:30 p.m. just north of the Dulles Toll Road.

Fairfax Fire and Rescue says the spill came from a saddle tank of an 18-wheeler box truck. Hazmat crews have contained the spill, but three lanes remain closed.

Traffic along the northbound HOT lanes is not affected. Video from the overhead (below) shows heavy traffic building prior to the accident scene. Congestion is backed up for northbound I-495 at least to Leesburg Pike.

The incident conjures fresh memories of last week’s tanker crash that shut down traffic on the Beltway for hours, though so far traffic has been able to squeeze by on the lefthand side of the highway’s main lanes.

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Update at 3:55 p.m. — Tow crews are on scene and one far left lane is now temporarily squeezing by the crash, but VDOT says it will soon completely close the highway again. The closure, which is expected to last throughout the rush hour, is causing serious traffic issues across the area.

The Inner Loop of the Beltway is closed for an extended period of time due to a truck crash prior to the American Legion Bridge.

Fairfax County Fire and Rescue say the tanker truck, which overturned on northbound I-495 near the Great Falls exit, is “actively leaking” 8,500 gallons of hazardous fluid, initially reported to be fuel.

Hazmat crews are “aggressively” working to contain the leak, but the Inner Loop is expected to remain closed for at least two hours and possibly longer, well into the evening rush hour.

Only one minor injury was reported.

The crash was caught on a dashcam, per a video posted on social media.

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