US Bridges

Sbl Route 0081 over RTE 311

Fair

Roanoke County, Virginia · 2.94-RT112; 1.24-RTE 419 · Structure no. 000000000014883

Built
1986
39 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
144 ft
1 main span
Daily traffic
34,754
2022 count
Owner
State
State Highway Agency

About this bridge

Sbl Route 0081 over RTE 311 is a steel stringer/multi-beam or girder carrying Sbl Route 0081 over RTE 311 in Roanoke County, Virginia. It was built in 1986, so it is 39 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 34,754 vehicles a day, roughly 1% of them trucks, projected to reach 38,719 by 2045. The structure is 144 ft (43.9 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSbl Route 0081
CrossesRTE 311
Location2.94-RT112; 1.24-RTE 419
RouteInterstate 81
Coordinates37.31483, -80.05465
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating84 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length144 ft (43.9 m)
Longest span144 ft (43.9 m)
Deck width56 ft (17 m)
Roadway width52 ft (16 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,754 (2022)
Projected traffic38,719 by 2045
Trucks1%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sbl Route 0081 over RTE 311 built?

It was built in 1986, making it 39 years old in 2025.

What condition is Sbl Route 0081 over RTE 311 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 January 2025.

How much traffic does Sbl Route 0081 over RTE 311 carry?

About 34,754 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Sbl Route 0081 over RTE 311?

The structure is 144 ft (43.9 m) long with a longest span of 144 ft (43.9 m) and a deck 56 ft wide.

Who owns Sbl Route 0081 over RTE 311?

It is owned by the State Highway Agency.