McLean Just Finished One Bridge Project and Started a Bigger One in the Same Season

If you spent this spring dodging orange barrels near Georgetown Pike, you probably assumed construction season in McLean was winding down. It wasn't. It was handing off.

The barrels near the Beltway came down. A different set went up in July, on a different bridge, with a different timeline, and it's easy to mix the two up if you only half-notice construction the way most people do. One project is essentially finished. The other is sixteen months from finished. Knowing which is which matters if you drive the Dulles Toll Road, Route 123, or the interchange where they meet, which is to say, if you live in McLean.

The Beltway Project That Just Wrapped

The construction most McLean drivers noticed first was tied to 495 NEXT, the $660 million express lanes extension built as a public-private partnership between Virginia and Transurban. As part of that project, crews rebuilt the Georgetown Pike Bridge over I-495, and on the night of April 6, 2026, VDOT shifted eastbound traffic onto the newly built southern portion of that bridge. The new express lanes themselves had already opened to drivers the previous November. Final completion of the broader 495 NEXT project was scheduled for mid-2026.

In other words, if your McLean commute crosses I-495 near Georgetown Pike, the disruptive part of that particular project is behind you. The bridge you're driving on now is the finished one.

The Toll Road Project That's Just Getting Started

The construction that replaced it is a separate VDOT project entirely, on a separate bridge, and it's the one that will actually shape your next year and a half. It's the rehabilitation of the eastbound Dulles Toll Road bridge over Route 123, better known locally as Dolley Madison Boulevard.

That bridge was built in 1963 and last repaired in 1995. VDOT has been rebuilding it since December 2025, replacing the concrete deck, parapets, and steel beams, repairing the piers and abutments, and installing a new overhead sign structure. Part of the point is to raise the vertical clearance underneath, for the Route 123 traffic passing beneath the span. It's a state-funded project priced at $11.85 million, and VDOT has it on track for completion in early 2028.

That completion date is the one worth writing down. It's not this fall. It's not next spring. It's roughly a year and a half out.

What the Lane Split Actually Changes

Here's the detail that gets lost when people lump this in with every other orange barrel in Fairfax County: the new traffic pattern doesn't touch your exit.

Starting the night of July 16, 2026, VDOT put a temporary lane split in place on the eastbound Dulles Toll Road at Route 123. The right lane continues straight, same as always. The left lane gets diverted through a temporary crossover onto the eastbound Dulles Airport Access Road. VDOT has been explicit that every eastbound Toll Road ramp to and from Route 123 stays open through the entire 18-month window.

So if your daily drive means getting on or off at Route 123, whether you're headed into downtown McLean, out toward Tysons, or connecting to Chain Bridge Road, the ramps you use haven't moved. What's changed is the through-movement in that one specific lane, for drivers passing straight over the bridge rather than exiting near it. It's a narrower disruption than the general "construction near McLean" chatter suggests, and it's worth knowing that distinction before you build in extra time you don't actually need, or worse, don't build in time for the one merge that does apply to you.

The Restart That Cost Three Weeks

The lane split was originally supposed to begin the night of June 25, 2026. VDOT postponed it, citing weather, and didn't reschedule the switch until July 16, three weeks later.

That's a small detail, but it's the kind of thing that tells you how to read the "approximately 18 months" VDOT keeps quoting. If you start that clock from the original June date, you land at the end of 2027. Start it from when the lane split actually happened in mid-July, and you land closer to VDOT's own early-2028 estimate. The gap between those two answers is only a few weeks, but it's a preview of how these timelines tend to move once weather, material delays, or inspection scheduling get involved. VDOT's own guidance to drivers has stayed simple through both the delay and the eventual start:

"Be alert to new traffic patterns and limit distractions."

Good advice for any construction zone, and a fair summary of how to treat this particular date range. Treat early 2028 as the target, not a guarantee, and check current status before you assume anything about that stretch of road has changed.

What This Means If You Drive East on the Toll Road

If your regular route includes the Dulles Toll Road heading toward the Beltway, budget for the crossover, particularly if you're used to running in the left lane through that stretch. If your route uses Route 123 to get in and out of McLean without touching the Toll Road directly, this particular project likely won't register in your daily drive at all, since the ramps you rely on aren't part of the disruption.

Either way, the fastest way to confirm current conditions before a trip is 511 Virginia, either online or through the free mobile app, which reflects VDOT's live work zone information rather than word of mouth about which barrels mean what.

McLean has absorbed a lot of road work over the past few years, from the Beltway widening to this bridge rehabilitation, and it's easy for residents to start treating all of it as one long, undifferentiated construction season. It isn't. One project just closed out. Another has a year and a half left to run. Knowing the difference is a small thing, but it's the kind of small thing that only comes from actually paying attention to this specific stretch of road, which is exactly the kind of local detail worth having on hand when you're the one navigating it every day.

If you're weighing what any of this means for a home near that interchange, or just want a neighbor's read on what's changing in McLean this season, Jennifer Fang Homes is local to these roads too. When you're ready to talk through your next move, Request Your Free Home Valuation and start the conversation from there.