Under Construction: Belmont Ridge Road at the Dulles Greenway in Loudoun County

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Note: The eastbound Dulles Greenway ramp to northbound Belmont Ridge is closed until mid-spring 2020 due to ramp reconstruction work, truck and non-truck detours are in place. There is also a traffic shift in place until mid-spring 2020 at the southbound Belmont Ridge Road ramp to the eastbound Dulles Greenway due to ramp reconstruction work.

This project is widening about a half-mile of Belmont Ridge Road (Route 659) from two to four lanes at the Dulles Greenway (Route 267).

When work is complete, drivers on Belmont Ridge Road will have two lanes in each direction at the Dulles Greenway interchange, with two-foot shoulders on both sides. On the bridge, the widening will be done entirely within the existing deck.

Other improvements include:

  • A new traffic signal at Belmont Ridge Road and the westbound Dulles Greenway on- and off-ramps. The traffic signal will include a flashing yellow arrow for drivers turning left from northbound Belmont Ridge Road to the westbound Dulles Greenway on-ramp.
  • Partially reconstructing the ramp from southbound Belmont Ridge Road to the eastbound Dulles Greenway and moving the ramp entrance slightly south.
  • Repaving and restriping Belmont Ridge Road just north and just south of the bridge.
  • Retiming and adjusting the traffic signal at Belmont Ridge Road and Sycolin Road.

Within the project limits, Belmont Ridge Road averages up to 19,000 vehicles a day and the Dulles Greenway averages up to 33,000. 

Estimated Costs
Preliminary Engineering - $1.4 million
Construction - $6.1 million
Total - $7.5 million

This project is being financed with federal and state funding.


This project aims to reduce congestion and improve safety and operations for drivers.

Major Milestones 

Begin Preliminary Engineering - June 2016
Notice of Willingness to Hold Public Hearing and Categorical Exclusion Availability - December 2017
Advertise for Construction - May 2019
Award Construction Contract - July 2019
Begin Construction - September 2019
Final Completion - Fall 2020


Contact Info:

Raymond Kollock

Yusaf Masud, P.E.

Project Photos

Phase: Under Construction

UPC: 109473

State ID: 0659-053-154, P101, M501

Federal ID: STP-5A01 (787), STP-5B01 (008)

Lat/Long: 39.036980, -77.522929

Locality: Loudoun

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November 2019
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Bridge over the Dulles Greenway, pre-construction - August 2019
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Belmont Ridge Road south of bridge, pre-construction - August 2019
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Belmont Ridge north of the bridge, pre-construction - August 2019
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Westbound Dulles Greenway On- and Off-Ramps, pre-construction - August 2019
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Entrance to southbound Belmont Ridge Road ramp to eastbound Dulles Greenway, pre-construction - August 2019

Page last modified: Jan. 10, 2020