US Bridges

South Run Road over South Run

Fair

Fairfax County, Virginia · 00.15FR641/00.20TO6570 · Structure no. 000000000007066

Built
1980
45 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
190 ft
3 main spans
Daily traffic
6,663
2022 count
Owner
State
State Highway Agency

About this bridge

South Run Road over South Run is a steel continuous stringer/multi-beam or girder carrying South Run Road over South Run in Fairfax County, Virginia. It was built in 1980, so it is 45 years old, younger than the Virginia average of 50.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 6,663 vehicles a day, roughly 1% of them trucks, projected to reach 9,728 by 2045. The structure is 190 ft (57.9 m) long and 35 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesSouth Run Road
CrossesSouth Run
Location00.15FR641/00.20TO6570
RouteCounty Highway 6070
CountyFairfax County
StateVirginia
Coordinates38.73363, -77.22706
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating52.7 US tons
Inventory rating40.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length190 ft (57.9 m)
Longest span70 ft (21.3 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,663 (2022)
Projected traffic9,728 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$150 million
NavigationNo navigation control on waterway

Frequently asked questions

When was South Run Road over South Run built?

It was built in 1980, making it 45 years old in 2025.

What condition is South Run Road over South Run in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does South Run Road over South Run carry?

About 6,663 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is South Run Road over South Run?

The structure is 190 ft (57.9 m) long with a longest span of 70 ft (21.3 m) and a deck 35 ft wide.

Who owns South Run Road over South Run?

It is owned by the State Highway Agency.