US Bridges

I-77 Nbl over County Route 21/28

Fair

Jackson County, West Virginia · 1.64 Mile South of CR 21 · Structure no. 00000000018A156

Built
1958
67 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
132 ft
1 main span
Daily traffic
6,900
2022 count
Owner
State
State Highway Agency

About this bridge

I-77 Nbl over County Route 21/28 is a steel continuous stringer/multi-beam or girder carrying I-77 Nbl over County Route 21/28 in Jackson County, West Virginia. It was built in 1958, so it is 67 years old, older than the West Virginia average of 44.7 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 6,900 vehicles a day, roughly 23% of them trucks, projected to reach 9,867 by 2042. The structure is 132 ft (40.3 m) long and 42 ft wide.

Location

Open in Google Maps
CarriesI-77 Nbl
CrossesCounty Route 21/28
Location1.64 Mile South of CR 21
RouteInterstate 77
CountyJackson County
StateWest Virginia
Coordinates38.74186, -81.67494
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
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 geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating84 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20 + Mod
Structure length132 ft (40.3 m)
Longest span58 ft (17.6 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,900 (2022)
Projected traffic9,867 by 2042
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-77 Nbl over County Route 21/28 built?

It was built in 1958, making it 67 years old in 2025.

What condition is I-77 Nbl over County Route 21/28 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 June 2024.

How much traffic does I-77 Nbl over County Route 21/28 carry?

About 6,900 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is I-77 Nbl over County Route 21/28?

The structure is 132 ft (40.3 m) long with a longest span of 58 ft (17.6 m) and a deck 42 ft wide.

Who owns I-77 Nbl over County Route 21/28?

It is owned by the State Highway Agency.