US Bridges

Flat Rock Court over Tributary of Long Branch

Good

Fairfax County, Virginia · 00.08 6055 / 00.02 6057 · Structure no. 000000000007036

Built
1982
43 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
26 ft
3 main spans
Daily traffic
773
2017 count
Owner
State
State Highway Agency

About this bridge

Flat Rock Court over Tributary of Long Branch is a concrete culvert carrying Flat Rock Court over Tributary of Long Branch in Fairfax County, Virginia. It was built in 1982, so it is 43 years old, younger 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 773 vehicles a day, projected to reach 850 by 2045. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFlat Rock Court
CrossesTributary of Long Branch
Location00.08 6055 / 00.02 6057
RouteCounty Highway 5056
Coordinates38.77532, -77.15285
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99 US tons
Inventory rating70 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic773 (2017)
Projected traffic850 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Flat Rock Court over Tributary of Long Branch built?

It was built in 1982, making it 43 years old in 2025.

What condition is Flat Rock Court over Tributary of Long Branch 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 September 2023.

How much traffic does Flat Rock Court over Tributary of Long Branch carry?

About 773 vehicles per day (2017 count).

How long is Flat Rock Court over Tributary of Long Branch?

The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m).

Who owns Flat Rock Court over Tributary of Long Branch?

It is owned by the State Highway Agency.