US Bridges

Interstate 79 NB over Wv 310

Fair

Marion County, West Virginia · 1.70 MI North CO Rt 64/2 · Structure no. 00000000025A142

Built
1966
59 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
157 ft
2 main spans
Daily traffic
18,450
2022 count
Owner
State
State Highway Agency

About this bridge

Interstate 79 NB over Wv 310 is a steel continuous stringer/multi-beam or girder carrying Interstate 79 NB over Wv 310 in Marion County, West Virginia. It was built in 1966, so it is 59 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 18,450 vehicles a day, roughly 14% of them trucks, projected to reach 25,090 by 2041. The structure is 157 ft (47.9 m) long and 47 ft wide.

Location

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CarriesInterstate 79 NB
CrossesWv 310
Location1.70 MI North CO Rt 64/2
RouteInterstate 7900
CountyMarion County
StateWest Virginia
Coordinates39.47209, -80.12069
Functional classUrban 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.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length157 ft (47.9 m)
Longest span76 ft (23.3 m)
Deck width47 ft (14.3 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,450 (2022)
Projected traffic25,090 by 2041
Trucks14%
Lanes on structure3
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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$6.4 million (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Interstate 79 NB over Wv 310 built?

It was built in 1966, making it 59 years old in 2025.

What condition is Interstate 79 NB over Wv 310 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 2023.

How much traffic does Interstate 79 NB over Wv 310 carry?

About 18,450 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is Interstate 79 NB over Wv 310?

The structure is 157 ft (47.9 m) long with a longest span of 76 ft (23.3 m) and a deck 47 ft wide.

Who owns Interstate 79 NB over Wv 310?

It is owned by the State Highway Agency.