Under Construction: Hunter Mill Road over Colvin Run Bridge Replacement in Fairfax County
Cost and schedule ►
Traffic alerts ►
Please note: Temporary traffic signals and Driveway Assistance Devices along Hunter Mill Road (Route 674) will be activated just north and south of Colvin Run around noon Wednesday, Sept. 14, read more in the traffic alert.
Intermittent closures of the trail that crosses Hunter Mill Road just south of the bridge may be needed during construction.
The weight limit of the bridge is posted at 10 tons.
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.
Vienna: Around noon Wed 9/14, temporary traffic signals and Driveway Assistance Devices (DADs) will be activated along Hunter Mill Rd in the area of Colvin Run to allow construction to continue on the new bridge. Sadly, these DADs won't have jokes. More: https://t.co/RnOKQkydae pic.twitter.com/aZACjX6nUw— VDOT Northern VA (@VaDOTNOVA) September 12, 2022
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.
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.
The project aims to reduce congestion and improve operations and safety.
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
Oscar Jamilla, DPE, PMP
Chan Basnayake, P.E., PMP, CCM
Other relevant links:
Construction Start News Release - August 2021
Project Plans - June 2020
Conceptual Bridge Replacement Study Report - October 2017
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