US Bridges

Swinks Mill Road over Scotts Run

Fair

Fairfax County, Virginia · 00.41FR.5001/00.15TO193 · Structure no. 000000000006843

Built
1960
65 years old, rebuilt 2019
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
32 ft
1 main span
Daily traffic
3,191
2022 count
Owner
State
State Highway Agency

About this bridge

Swinks Mill Road over Scotts Run is a prestressed concrete slab carrying Swinks Mill Road over Scotts Run in Fairfax County, Virginia. It was built in 1960 and reconstructed in 2019, so it is 65 years old, older 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 3,191 vehicles a day, roughly 1% of them trucks, projected to reach 4,659 by 2042. The structure is 32 ft (9.8 m) long and 21 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesSwinks Mill Road
CrossesScotts Run
Location00.41FR.5001/00.15TO193
RouteCounty Highway 685
CountyFairfax County
StateVirginia
Coordinates38.95666, -77.20543
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating58.8 US tons
Inventory rating45.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span28 ft (8.5 m)
Deck width21 ft (6.4 m)
Roadway width19 ft (5.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,191 (2022)
Projected traffic4,659 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$121 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Swinks Mill Road over Scotts Run built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2019.

What condition is Swinks Mill Road over Scotts 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 September 2024.

How much traffic does Swinks Mill Road over Scotts Run carry?

About 3,191 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Swinks Mill Road over Scotts Run?

The structure is 32 ft (9.8 m) long with a longest span of 28 ft (8.5 m) and a deck 21 ft wide.

Who owns Swinks Mill Road over Scotts Run?

It is owned by the State Highway Agency.