US Bridges

J K Robinson - Nbl over I-81

Fair

Frederick County, Virginia · 0.25 to 642 - 0.25 to 11 · Structure no. 000000000008064

Built
1964
61 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
249 ft
4 main spans
Daily traffic
10,477
2022 count
Owner
State
State Highway Agency

About this bridge

J K Robinson - Nbl over I-81 is a prestressed concrete stringer/multi-beam or girder carrying J K Robinson - Nbl over I-81 in Frederick County, Virginia. It was built in 1964, so it is 61 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 10,477 vehicles a day, projected to reach 15,298 by 2045. The structure is 249 ft (75.9 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesJ K Robinson - Nbl
CrossesI-81
Location0.25 to 642 - 0.25 to 11
RouteState Highway 37
CountyFrederick County
StateVirginia
Coordinates39.12031, -78.19083
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating53 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length249 ft (75.9 m)
Longest span72 ft (21.9 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,477 (2022)
Projected traffic15,298 by 2045
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$75 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was J K Robinson - Nbl over I-81 built?

It was built in 1964, making it 61 years old in 2025.

What condition is J K Robinson - Nbl 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 January 2023.

How much traffic does J K Robinson - Nbl over I-81 carry?

About 10,477 vehicles per day (2022 count).

How long is J K Robinson - Nbl over I-81?

The structure is 249 ft (75.9 m) long with a longest span of 72 ft (21.9 m) and a deck 35 ft wide.

Who owns J K Robinson - Nbl over I-81?

It is owned by the State Highway Agency.