US Bridges

Interstate 79 over Mar. Co. Rt. 64

Good

Marion County, West Virginia · 0.68 MI North Mrn CO 64/2 · Structure no. 00000000025A260

Built
2008
17 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
218 ft
1 main span
Daily traffic
37,100
2022 count
Owner
State
State Highway Agency

About this bridge

Interstate 79 over Mar. Co. Rt. 64 is a steel continuous stringer/multi-beam or girder carrying Interstate 79 over Mar. Co. Rt. 64 in Marion 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 37,100 vehicles a day, roughly 14% of them trucks, projected to reach 50,455 by 2041. The structure is 218 ft (66.4 m) long and 138 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesInterstate 79
CrossesMar. Co. Rt. 64
Location0.68 MI North Mrn CO 64/2
RouteInterstate 7900
CountyMarion County
StateWest Virginia
Coordinates39.46437, -80.13663
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating34.9 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHL 93
Structure length218 ft (66.4 m)
Longest span82 ft (25 m)
Deck width138 ft (42.2 m)
Roadway width134 ft (40.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,100 (2022)
Projected traffic50,455 by 2041
Trucks14%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
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 Interstate 79 over Mar. Co. Rt. 64 built?

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

What condition is Interstate 79 over Mar. Co. Rt. 64 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does Interstate 79 over Mar. Co. Rt. 64 carry?

About 37,100 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is Interstate 79 over Mar. Co. Rt. 64?

The structure is 218 ft (66.4 m) long with a longest span of 82 ft (25 m) and a deck 138 ft wide.

Who owns Interstate 79 over Mar. Co. Rt. 64?

It is owned by the State Highway Agency.