US Bridges

Sully Road over Tributary of Cain Branch

Fair

Fairfax County, Virginia · 0.65MI.FR 50/1.90MI.TO668 · Structure no. 000000000006267

Built
1990
35 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
24 ft
3 main spans
Daily traffic
84,996
2022 count
Owner
State
State Highway Agency

About this bridge

Sully Road over Tributary of Cain Branch is a concrete culvert carrying Sully Road over Tributary of Cain Branch in Fairfax County, Virginia. It was built in 1990, so it is 35 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 84,996 vehicles a day, roughly 1% of them trucks, projected to reach 124,094 by 2045. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesSully Road
CrossesTributary of Cain Branch
Location0.65MI.FR 50/1.90MI.TO668
RouteState Highway 28
CountyFairfax County
StateVirginia
Coordinates38.90511, -77.43391
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating98.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length24 ft (7.3 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 traffic84,996 (2022)
Projected traffic124,094 by 2045
Trucks1%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

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 Sully Road over Tributary of Cain Branch built?

It was built in 1990, making it 35 years old in 2025.

What condition is Sully Road over Tributary of Cain Branch 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 April 2023.

How much traffic does Sully Road over Tributary of Cain Branch carry?

About 84,996 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Sully Road over Tributary of Cain Branch?

The structure is 24 ft (7.3 m) long with a longest span of 8 ft (2.4 m).

Who owns Sully Road over Tributary of Cain Branch?

It is owned by the State Highway Agency.