US Bridges

Old Mill Road over Dogue Creek

Good

Fairfax County, Virginia · 00.20 1169 / 00.38 3106 · Structure no. 000000000006726

Built
1974
51 years old, rebuilt 1993
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
1,159
2022 count
Owner
State
State Highway Agency

About this bridge

Old Mill Road over Dogue Creek is a prestressed concrete box beam or girders - multiple carrying Old Mill Road over Dogue Creek in Fairfax County, Virginia. It was built in 1974 and reconstructed in 1993, so it is 51 years old, older than the Virginia average of 50.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,159 vehicles a day, roughly 1% of them trucks, projected to reach 1,292 by 2045. The structure is 52 ft (15.8 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesOld Mill Road
CrossesDogue Creek
Location00.20 1169 / 00.38 3106
RouteCounty Highway 623
Coordinates38.71096, -77.12467
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating86.5 US tons
Inventory rating60 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length52 ft (15.8 m)
Longest span50 ft (15.2 m)
Deck width32 ft (9.8 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,159 (2022)
Projected traffic1,292 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$175 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Mill Road over Dogue Creek built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 1993.

What condition is Old Mill Road over Dogue Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does Old Mill Road over Dogue Creek carry?

About 1,159 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Old Mill Road over Dogue Creek?

The structure is 52 ft (15.8 m) long with a longest span of 50 ft (15.2 m) and a deck 32 ft wide.

Who owns Old Mill Road over Dogue Creek?

It is owned by the State Highway Agency.