US Bridges

Auburn Farm RD over Bull Run

Fair

Loudoun County, Virginia · 02.60FR620/01.00TO2018 · Structure no. 000000000011298

Built
1966
59 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
86 ft
1 main span
Daily traffic
731
2014 count
Owner
State
State Highway Agency

About this bridge

Auburn Farm RD over Bull Run is a steel stringer/multi-beam or girder carrying Auburn Farm RD over Bull Run in Loudoun County, Virginia. It was built in 1966, so it is 59 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 5 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 731 vehicles a day, projected to reach 961 by 2042. The structure is 86 ft (26.2 m) long and 15 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesAuburn Farm RD
CrossesBull Run
Location02.60FR620/01.00TO2018
RouteCounty Highway 705
CountyLoudoun County
StateVirginia
Coordinates38.88954, -77.57031
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating78.2 US tons
Inventory rating60.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length86 ft (26.2 m)
Longest span86 ft (26.2 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic731 (2014)
Projected traffic961 by 2042
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$130 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Auburn Farm RD over Bull Run built?

It was built in 1966, making it 59 years old in 2025.

What condition is Auburn Farm RD over Bull 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 Auburn Farm RD over Bull Run carry?

About 731 vehicles per day (2014 count).

How long is Auburn Farm RD over Bull Run?

The structure is 86 ft (26.2 m) long with a longest span of 86 ft (26.2 m) and a deck 15 ft wide.

Who owns Auburn Farm RD over Bull Run?

It is owned by the State Highway Agency.