US Bridges

I-81 Nbl on Ramp a over I-81

Fair

Rockingham County, Virginia · 0.33 Rt 11 - 0.42 81 Nbl · Structure no. 000000000015819

Built
1965
60 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
257 ft
4 main spans
Daily traffic
1,014
2022 count
Owner
State
State Highway Agency

About this bridge

I-81 Nbl on Ramp a over I-81 is a steel stringer/multi-beam or girder carrying I-81 Nbl on Ramp a over I-81 in Rockingham County, Virginia. It was built in 1965, so it is 60 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 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 1,014 vehicles a day, roughly 12% of them trucks, projected to reach 1,480 by 2045. The structure is 257 ft (78.3 m) long and 25 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesI-81 Nbl on Ramp a
CrossesI-81
Location0.33 Rt 11 - 0.42 81 Nbl
RouteInterstate 81
CountyRockingham County
StateVirginia
Coordinates38.48143, -78.81118
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length257 ft (78.3 m)
Longest span71 ft (21.6 m)
Deck width25 ft (7.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,014 (2022)
Projected traffic1,480 by 2045
Trucks12%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed11.8 mi (19 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$50 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-81 Nbl on Ramp a over I-81 built?

It was built in 1965, making it 60 years old in 2025.

What condition is I-81 Nbl on Ramp a over I-81 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 October 2023.

How much traffic does I-81 Nbl on Ramp a over I-81 carry?

About 1,014 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is I-81 Nbl on Ramp a over I-81?

The structure is 257 ft (78.3 m) long with a longest span of 71 ft (21.6 m) and a deck 25 ft wide.

Who owns I-81 Nbl on Ramp a over I-81?

It is owned by the State Highway Agency.