US Bridges

I-81 Sbl over Rt 694 & Hog Thief Creek

Fair

Washington County, Virginia · 3.58 Fr. 11; 3.18 to 737. · Structure no. 000000000018930

Built
1962
63 years old, rebuilt 1987
Condition
Fair
inspected May 2024
Type
Tee Beam
Concrete
Length
166 ft
4 main spans
Daily traffic
20,320
2022 count
Owner
State
State Highway Agency

About this bridge

I-81 Sbl over Rt 694 & Hog Thief Creek is a concrete tee beam carrying I-81 Sbl over Rt 694 & Hog Thief Creek in Washington County, Virginia. It was built in 1962 and reconstructed in 1987, so it is 63 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 20,320 vehicles a day, roughly 1% of them trucks, projected to reach 20,985 by 2042. The structure is 166 ft (50.7 m) long and 44 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesI-81 Sbl
CrossesRt 694 & Hog Thief Creek
Location3.58 Fr. 11; 3.18 to 737.
RouteInterstate 81
Coordinates36.74616, -81.88613
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating53 US tons
Inventory rating41 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length166 ft (50.7 m)
Longest span41 ft (12.5 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,320 (2022)
Projected traffic20,985 by 2042
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$204.1 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-81 Sbl over Rt 694 & Hog Thief Creek built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1987.

What condition is I-81 Sbl over Rt 694 & Hog Thief Creek 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 May 2024.

How much traffic does I-81 Sbl over Rt 694 & Hog Thief Creek carry?

About 20,320 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is I-81 Sbl over Rt 694 & Hog Thief Creek?

The structure is 166 ft (50.7 m) long with a longest span of 41 ft (12.5 m) and a deck 44 ft wide.

Who owns I-81 Sbl over Rt 694 & Hog Thief Creek?

It is owned by the State Highway Agency.