Traffic & Transportation in Ashburn
Ashburn gained direct WMATA Silver Line Metro access when the Ashburn and Loudoun Gateway stations opened November 15, 2022, sits directly adjacent to Washington Dulles International Airport (a record 29.01 million 2025 passengers), and is served by the Dulles Greenway toll road ($5.80 peak/$5.25 off-peak) -- though the Route 28/Dulles Toll Road/Dulles Greenway interchange near Ashburn carries real, documented congestion (Route 28 alone averaging 155,000 vehicles/day).
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Learn moreA Genuinely New Metro Presence: Ashburn and Loudoun Gateway Stations
The WMATA Silver Line's Ashburn station -- the line's western terminus -- and the separate Loudoun Gateway station both opened on November 15, 2022, after originally being planned to begin operation in 2016. Ashburn station sits in the median of the Dulles Greenway east of Old Ryan Road; Loudoun County itself was responsible for constructing three parking garages to serve the two stations (two at Ashburn, one at Loudoun Gateway). The large mixed-use Loudoun Station development sits just northeast of the Ashburn station.
Washington Dulles International Airport: Directly Adjacent, and Genuinely Busy
Washington Dulles International Airport sits directly adjacent to Ashburn, and handled a record 29.01 million passengers in 2025 (up 6.4% year-over-year), including a record 10.53 million international travelers, served by 46 airlines to 164 destinations -- already sourced and disclosed in this project's Virginia state hub record, restated here for its direct adjacency to Ashburn specifically (distinct from Reagan National's role in this project's Arlington, VA sibling record).
The Dulles Greenway: A Real, Ongoing Toll-Rate Story
The Dulles Greenway is a 14-mile privately owned toll road connecting Dulles Airport to Leesburg, opened in 1995, currently charging a flat $5.80 peak / $5.25 off-peak toll. Virginia's State Corporation Commission denied the operator's request to raise tolls to $8.10 peak / $6.40 off-peak in September 2024, so the lower rates remained current as of this research pass -- though the operator continues seeking increases to service more than $1 billion in debt, a real, ongoing rate-case dynamic rather than a permanently settled toll level.
Real, Documented Congestion at the Route 28/Dulles Toll Road/Dulles Greenway Interchange
At the interchange near Ashburn, Route 28 itself carries about 155,000 vehicles/day, the Dulles Toll Road about 83,000/day, and the Dulles Greenway about 46,000/day. VDOT's own traffic study flagged toll avoidance -- drivers diverting to the free Route 28 rather than pay the Dulles Greenway toll -- as a real, documented contributor to congestion at this specific interchange, a genuine, if localized, traffic pain point for Ashburn-area commuters.
A Genuinely Disclosed Gap: No Ashburn-Specific Congestion Ranking
This research pass did not find a specific, current, independently confirmed national traffic-congestion ranking for Ashburn itself as distinct from the broader Northern Virginia/Washington, D.C. metro area -- most available congestion data tracks the metro area or specific interchanges rather than Ashburn as its own geography. Rather than invent a specific Ashburn-only rank, this gap is disclosed honestly, consistent with a similar disclosed gap in this project's Arlington, VA and Denver builds.
Key takeaways
- The Silver Line's Ashburn and Loudoun Gateway stations opened November 15, 2022, giving Ashburn direct WMATA Metro access to Washington, D.C. after years of delay from an original 2016 target.
- Washington Dulles International Airport sits directly adjacent to Ashburn -- a record 29.01 million 2025 passengers (up 6.4% YoY), including a record 10.53 million international travelers.
- The Dulles Greenway toll road charges a flat $5.80 peak/$5.25 off-peak toll; the State Corporation Commission denied a proposed increase to $8.10/$6.40 in September 2024, though the operator continues seeking increases to service over $1 billion in debt.
- The Route 28/Dulles Toll Road/Dulles Greenway interchange near Ashburn carries real, documented congestion -- Route 28 alone averages 155,000 vehicles/day, with toll avoidance flagged by VDOT as a contributing factor.
- No Ashburn-specific traffic-congestion ranking was found this pass -- disclosed as a genuine gap rather than invented, consistent with similar gaps disclosed elsewhere in this project.
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