US Bridges

I-81 Nbl Off Ramp over Staley Creek

Fair

Smyth County, Virginia · 1.67 to R730; .06 to R16 · Structure no. 000000000020621

Built
1962
63 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
26 ft
3 main spans
Daily traffic
846
2022 count
Owner
State
State Highway Agency

About this bridge

I-81 Nbl Off Ramp over Staley Creek is a concrete culvert carrying I-81 Nbl Off Ramp over Staley Creek in Smyth County, Virginia. It was built in 1962, 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 846 vehicles a day, projected to reach 988 by 2045. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-81 Nbl Off Ramp
CrossesStaley Creek
Location1.67 to R730; .06 to R16
RouteInterstate 81
CountySmyth County
StateVirginia
Coordinates36.82565, -81.50694
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
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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating49.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length26 ft (7.9 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 traffic846 (2022)
Projected traffic988 by 2045
Trucks0%
Lanes on structure1
Traffic directionOne-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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-81 Nbl Off Ramp over Staley Creek built?

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

What condition is I-81 Nbl Off Ramp over Staley 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 August 2023.

How much traffic does I-81 Nbl Off Ramp over Staley Creek carry?

About 846 vehicles per day (2022 count).

How long is I-81 Nbl Off Ramp over Staley Creek?

The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m).

Who owns I-81 Nbl Off Ramp over Staley Creek?

It is owned by the State Highway Agency.