VDOT: I-95 Exit 148 (Quantico) detour lifted after crash; expect delays southbound

VDOT’s July 10, 2026 update posted at 9:05 a.m. says all Interstate 95 southbound lanes reopened at mile marker 146 in Stafford County and the Exit 148 (Quantico) detour was lifted after an earlier vehicle crash was cleared.

Even so, the agency warns drivers to expect residual delays on I-95 southbound approaching Exit 148 and on Route 1 southbound between Russell Road in the Quantico area and Route 610 (Garrisonville Road) in Stafford.

Where the crash shut down lanes

VDOT said a multi-vehicle crash just south of Exit 148 (near the Prince William County–Stafford County line) closed all lanes at mile marker 146.

Detour guidance VDOT used at Exit 148 (Quantico)

During the closure, VDOT directed all southbound drivers to detour at Exit 148 (Quantico) to Route 1 southbound (ahead of the crash area).

VDOT also noted that motorists could re-enter I-95 southbound at Exit 143 (Aquia/Garrisonville) in Stafford, and that traffic signals along Route 1 were retimed to accommodate the shifted traffic flow.

With today’s 9:05 a.m. update, VDOT says that detour is now lifted—but it is still warning about lingering congestion in the same approach corridors.

What to do if you commute southbound

• Add buffer time if you’re heading south on I-95 toward Exit 148.
• Expect slowdowns on Route 1 from Russell Road (Quantico area) to Route 610 (Garrisonville Road).
• Re-check before you leave by viewing VDOT updates through 511Virginia, since incident conditions can change.

Related construction that can add to Route 1 slowdowns

VDOT’s Fredericksburg District weekly travel alert also lists ongoing Route 1 bridge replacement work at Chopawamsic Creek near the Quantico Marine Corps Base, with phased lane closures at times.

Sources

• VDOT: Expect major I-95 southbound delays at Exit 148 (Quantico) for vehicle crash (includes 9:05 a.m. update)
• Potomac Local: I-95 southbound closed in Stafford County due to multi-vehicle crash (background)