Under Construction: Hunter Mill Road over Colvin Run Bridge Replacement in Fairfax County

Cost and schedule ►


Traffic alerts ►

Public outreach ►

Please note: Temporary traffic signals and Driveway Assistance Devices are in place along Hunter Mill Road just north and south of Colvin Run until spring 2023, read more in the traffic alert.

This project is replacing the weight-restricted (10 tons) one-lane Hunter Mill Road (Route 674) bridge over Colvin Run. The bridge was originally built in 1974. The new bridge will have two lanes separated by a median/splitter island.

The project also includes:

  • An improved trail crossing south of the bridge
  • Landscaping in the median/splitter island 
  • Abutments for a new trail bridge over Colvin Run (Fairfax County will construct the trail bridge in the future)

Hunter Mill Road averages 7,400 vehicles a day within the project limits.

Estimated Costs
Preliminary Engineering - $1 million
Construction - $4.2 million
Total: $5.2 million

This project is financed with federal, state (including State of Good Repair funds used for bridges) and Fairfax County funding.

Benefits 

The project aims to reduce congestion and improve operations and safety.

Major Milestones 

Public Information Meeting - April 2018
Virtual Public Involvement - May/June 2020
Virtual Design Public Hearing - September 2020
Advertise for Construction - February 2021
Award Construction Contract - April 2021
Begin Construction - August 2021
Final Completion - Spring 2023

Resources

Contact Info:

Oscar Jamilla, DPE, PMP
Construction
703-259-2769

Chan Basnayake, P.E., PMP, CCM
Construction
703-259-2947

Project Photos

Other relevant links:

Construction Start News Release - August 2021

Virtual Design Public Hearing 
VideoPresentationComment SheetAd and Webpage - September 2020

Project Plans - June 2020

Conceptual Bridge Replacement Study Report - October 2017

Previous Meetings >>

Major funding source: State of Good Repair

Phase: Under Construction

UPC: 110499, 110433

State ID: 0674-029-358, P101, B643

Federal ID: STP-BR09 (295)

Lat/Long: 38.965604, -77.309634

Locality: Fairfax

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View of the bridge, looking north on Hunter Mill Road - July 2022
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June 2022
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Pre-construction view of the bridge, looking south on Hunter Mill Road
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Pre-construction profile view of the bridge
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Profile rendering of the new bridge

Page last modified: Sept. 14, 2022