US Bridges

I-81 Sbl Ramp over Sbl Ramp C Ov Nicks CR

Fair

Smyth County, Virginia · .16 FR I-81SBL-.01 to 622 · Structure no. 000000000017456

Built
1990
35 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
364
2022 count
Owner
State
State Highway Agency

About this bridge

I-81 Sbl Ramp over Sbl Ramp C Ov Nicks CR is a concrete slab carrying I-81 Sbl Ramp over Sbl Ramp C Ov Nicks CR in Smyth 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 5 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 364 vehicles a day, projected to reach 531 by 2042. The structure is 32 ft (9.8 m) long and 37 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesI-81 Sbl Ramp
CrossesSbl Ramp C Ov Nicks CR
Location.16 FR I-81SBL-.01 to 622
RouteInterstate 81
CountySmyth County
StateVirginia
Coordinates36.86405, -81.43483
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99 US tons
Inventory rating98 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic364 (2022)
Projected traffic531 by 2042
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-81 Sbl Ramp over Sbl Ramp C Ov Nicks CR built?

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

What condition is I-81 Sbl Ramp over Sbl Ramp C Ov Nicks CR 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 February 2024.

How much traffic does I-81 Sbl Ramp over Sbl Ramp C Ov Nicks CR carry?

About 364 vehicles per day (2022 count).

How long is I-81 Sbl Ramp over Sbl Ramp C Ov Nicks CR?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 37 ft wide.

Who owns I-81 Sbl Ramp over Sbl Ramp C Ov Nicks CR?

It is owned by the State Highway Agency.