US Bridges

I-77 Sbl over CR 21/34

Fair

Jackson County, West Virginia · 0.65 Mi. S. of Cr. 21 · Structure no. 00000000018A148

Built
1959
66 years old, rebuilt 1987
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
150 ft
2 main spans
Daily traffic
10,150
2019 count
Owner
State
State Highway Agency

About this bridge

I-77 Sbl over CR 21/34 is a steel continuous stringer/multi-beam or girder carrying I-77 Sbl over CR 21/34 in Jackson County, West Virginia. It was built in 1959 and reconstructed in 1987, so it is 66 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 10,150 vehicles a day, roughly 23% of them trucks, projected to reach 14,515 by 2039. The structure is 150 ft (45.7 m) long and 42 ft wide.

Location

Open in Google Maps
CarriesI-77 Sbl
CrossesCR 21/34
Location0.65 Mi. S. of Cr. 21
RouteInterstate 77
CountyJackson County
StateWest Virginia
Coordinates38.58854, -81.64142
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
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
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length150 ft (45.7 m)
Longest span73 ft (22.2 m)
Deck width42 ft (12.8 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,150 (2019)
Projected traffic14,515 by 2039
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
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$850,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I-77 Sbl over CR 21/34 built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1987.

What condition is I-77 Sbl over CR 21/34 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-77 Sbl over CR 21/34 carry?

About 10,150 vehicles per day (2019 count), of which roughly 23% are trucks.

How long is I-77 Sbl over CR 21/34?

The structure is 150 ft (45.7 m) long with a longest span of 73 ft (22.2 m) and a deck 42 ft wide.

Who owns I-77 Sbl over CR 21/34?

It is owned by the State Highway Agency.