US Bridges

I-77 Nbl over Bluestone Rvr & Route 3

Fair

Mercer County, West Virginia · 2.20 Mi. S. of US 19 · Structure no. 00000000028A215

Built
1979
46 years old
Condition
Fair
inspected July 2024
Type
Truss - Deck
Steel Continuous
Length
1,512 ft
1 main span
Daily traffic
28,453
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-77 Nbl over Bluestone Rvr & Route 3 is a steel continuous truss - deck carrying I-77 Nbl over Bluestone Rvr & Route 3 in Mercer County, West Virginia. It was built in 1979, so it is 46 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 28,453 vehicles a day, roughly 23% of them trucks, projected to reach 56,906 by 2043. The structure is 1,512 ft (460.8 m) long and 45 ft wide.

Location

Open in Google Maps
CarriesI-77 Nbl
CrossesBluestone Rvr & Route 3
Location2.20 Mi. S. of US 19
RouteInterstate 7700
CountyMercer County
StateWest Virginia
Coordinates37.47948, -81.07319
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79 US tons
Inventory rating43 US tons

Structure

Structure typeTruss - Deck
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans1 (+5 approach)
Design loadHS 20 + Mod
Structure length1,512 ft (460.8 m)
Longest span518 ft (157.9 m)
Deck width45 ft (13.6 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,453 (2023)
Projected traffic56,906 by 2043
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed—
TollOn an Interstate toll segment under Secretarial agreement
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-77 Nbl over Bluestone Rvr & Route 3 built?

It was built in 1979, making it 46 years old in 2025.

What condition is I-77 Nbl over Bluestone Rvr & Route 3 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 July 2024.

How much traffic does I-77 Nbl over Bluestone Rvr & Route 3 carry?

About 28,453 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is I-77 Nbl over Bluestone Rvr & Route 3?

The structure is 1,512 ft (460.8 m) long with a longest span of 518 ft (157.9 m) and a deck 45 ft wide.

Who owns I-77 Nbl over Bluestone Rvr & Route 3?

It is owned by the State Toll Authority.