Starting next week, all drivers traveling north on the Capital Beltway through Tysons will share the same exit to get to the westbound Dulles Toll Road.
The existing Exit 45 will be closed around Wednesday, Nov. 16, so construction can begin on a new bridge for the Beltway (I-495) over the toll road ramps, the Virginia Department of Transportation announced Thursday (Nov. 3).
Both general-purpose and express traffic looking to get onto the toll road’s westbound lanes will instead be directed onto a 495 Express Lanes ramp, located about one-third of a mile south of the old exit.
“To facilitate this new travel pattern, I-495 will be reduced from four to three lanes for a stretch of approximately one-half mile near the I-495 and Dulles Corridor interchange,” VDOT said. “…Due to this change, drivers traveling on southbound Route 123 will not be able to access westbound Dulles Toll Road from northbound I-495.”
The new configuration will be in place through early 2025, as work continues on the 495 Express Lanes Northern Extension (495 NEXT) project, which is extending the lanes 2.5 miles from Tysons to the George Washington Memorial Parkway interchange in McLean.
The redesigned Dulles Toll Road interchange will include two new ramps from I-495 North, one going east and one going west. Three stormwater ponds are also being constructed inside the ramp from the westbound toll road to the Beltway.
Active construction began on 495 NEXT in late May and is expected to continue into 2026.
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