US Bridges

I 77 NB over CR 21/17

Fair

Kanawha County, West Virginia · 2.58 MI North of Wv 622 · Structure no. 00000000020A831

Built
2008
17 years old
Condition
Fair
inspected December 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
140 ft
1 main span
Daily traffic
16,000
2021 count
Owner
State
State Highway Agency

About this bridge

I 77 NB over CR 21/17 is a steel stringer/multi-beam or girder carrying I 77 NB over CR 21/17 in Kanawha County, West Virginia. It was built in 2008, so it is 17 years old, younger 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 6 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 16,000 vehicles a day, roughly 17% of them trucks, projected to reach 24,960 by 2041. The structure is 140 ft (42.8 m) long and 45 ft wide.

Location

Open in Google Maps
CarriesI 77 NB
CrossesCR 21/17
Location2.58 MI North of Wv 622
RouteInterstate 77
CountyKanawha County
StateWest Virginia
Coordinates38.54486, -81.63694
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length140 ft (42.8 m)
Longest span137 ft (41.7 m)
Deck width45 ft (13.6 m)
Roadway width42 ft (12.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,000 (2021)
Projected traffic24,960 by 2041
Trucks17%
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 77 NB over CR 21/17 built?

It was built in 2008, making it 17 years old in 2025.

What condition is I 77 NB over CR 21/17 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 December 2022.

How much traffic does I 77 NB over CR 21/17 carry?

About 16,000 vehicles per day (2021 count), of which roughly 17% are trucks.

How long is I 77 NB over CR 21/17?

The structure is 140 ft (42.8 m) long with a longest span of 137 ft (41.7 m) and a deck 45 ft wide.

Who owns I 77 NB over CR 21/17?

It is owned by the State Highway Agency.