Under Construction: Route 123 over Route 7 Bridge Rehabilitation in Fairfax County

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This project is rehabilitating the northbound and southbound Route 123 (Chain Bridge Road) bridges over Route 7 (Leesburg Pike). The bridges were built in 1965.

The planned improvements include:

  • Repairing and resurfacing the concrete bridge decks
  • Repairing bridge piers, abutments and bearings
  • Painting steel bridge beams
  • Repaving Route 123 adjacent to the bridges

At the bridges, Route 123 averages up to 30,000 vehicles a day and Route 7 averages up to 86,000.

Estimated Costs
Preliminary Engineering - $300,000
Construction - $2.2 million
Total - $2.5 million

The project is financed with state and federal State of Good Repair funding used for maintenance of structures and bridges.


The project aims to improve safety for drivers and pedestrians and extend the overall life of the bridges. 

Major Milestones 

Public Information Meeting - May 2019
Advertise for Construction - August 2019
Award Construction Contract - November 2019
Begin Construction - January 2020
Final Completion - Winter 2020/21


Contact Info:

Benjamin Ernst, P.E., CCM

Yusaf Masud, P.E.

Project Photos

Other relevant links:

Programmatic Categorical Exclusions

Fairfax County Tysons Transportation Projects and Studies

Previous Meetings >>

Major funding source: State of Good Repair

Phase: Under Construction

UPC: 111685, 111686

State ID: 0123-029-385, P101, B640; 0123-029-384, P101, B641

Federal ID: STP-BR0-9 (297)

Lat/Long: 38.918934, -77.231364

Locality: Fairfax

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Northbound Route 123 bridge over Route 7, pre-construction
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Southbound Route 123 bridge over Route 7, pre-construction

Page last modified: July 11, 2020