US Bridges

I-81 Nbl over South Fork Creek

Good

Shenandoah County, Virginia · 2.05 to 651 - 3.09 to 55 · Structure no. 000000000017063

Built
1966
59 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
26 ft
3 main spans
Daily traffic
25,986
2022 count
Owner
State
State Highway Agency

About this bridge

I-81 Nbl over South Fork Creek is a concrete culvert carrying I-81 Nbl over South Fork Creek in Shenandoah County, Virginia. It was built in 1966, so it is 59 years old, older than the Virginia average of 50.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 25,986 vehicles a day, roughly 1% of them trucks, projected to reach 37,940 by 2045. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-81 Nbl
CrossesSouth Fork Creek
Location2.05 to 651 - 3.09 to 55
RouteInterstate 81
Coordinates38.98804, -78.41292
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating98 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 traffic25,986 (2022)
Projected traffic37,940 by 2045
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-81 Nbl over South Fork Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is I-81 Nbl over South Fork Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does I-81 Nbl over South Fork Creek carry?

About 25,986 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is I-81 Nbl over South Fork 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 over South Fork Creek?

It is owned by the State Highway Agency.