US Bridges

Sully Rd. over Cabin Branch

Fair

Loudoun County, Virginia · 0.80FR625 0.30TO847 · Structure no. 000000000011107

Built
1963
62 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
38 ft
4 main spans
Daily traffic
127,227
2022 count
Owner
State
State Highway Agency

About this bridge

Sully Rd. over Cabin Branch is a concrete culvert carrying Sully Rd. over Cabin Branch in Loudoun County, Virginia. It was built in 1963, so it is 62 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 127,227 vehicles a day, roughly 1% of them trucks, projected to reach 171,439 by 2045. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSully Rd.
CrossesCabin Branch
Location0.80FR625 0.30TO847
RouteState Highway 28
CountyLoudoun County
StateVirginia
Coordinates39.01691, -77.43212
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 spans4
Design loadHS 20
Structure length38 ft (11.6 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 traffic127,227 (2022)
Projected traffic171,439 by 2045
Trucks1%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$65 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Sully Rd. over Cabin Branch built?

It was built in 1963, making it 62 years old in 2025.

What condition is Sully Rd. over Cabin 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 March 2023.

How much traffic does Sully Rd. over Cabin Branch carry?

About 127,227 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Sully Rd. over Cabin Branch?

The structure is 38 ft (11.6 m) long with a longest span of 8 ft (2.4 m).

Who owns Sully Rd. over Cabin Branch?

It is owned by the State Highway Agency.