US Bridges

Interstate 79 NB over Mar. Co. Rt. 73/73

Fair

Marion County, West Virginia · 2.23 MI South US Rt 250 · Structure no. 00000000025A129

Built
1966
59 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
285 ft
2 main spans
Daily traffic
18,600
2022 count
Owner
State
State Highway Agency

About this bridge

Interstate 79 NB over Mar. Co. Rt. 73/73 is a steel continuous stringer/multi-beam or girder carrying Interstate 79 NB over Mar. Co. Rt. 73/73 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 18,600 vehicles a day, roughly 14% of them trucks, projected to reach 25,300 by 2041. The structure is 285 ft (86.9 m) long and 35 ft wide.

Location

Open in Google Maps
CarriesInterstate 79 NB
CrossesMar. Co. Rt. 73/73
Location2.23 MI South US Rt 250
RouteInterstate 7900
CountyMarion County
StateWest Virginia
Coordinates39.40545, -80.20382
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length285 ft (86.9 m)
Longest span80 ft (24.4 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,600 (2022)
Projected traffic25,300 by 2041
Trucks14%
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 proposedDeck replacement with only incidental widening
Estimated improvement cost$1.8 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Interstate 79 NB over Mar. Co. Rt. 73/73 built?

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

What condition is Interstate 79 NB over Mar. Co. Rt. 73/73 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 Interstate 79 NB over Mar. Co. Rt. 73/73 carry?

About 18,600 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is Interstate 79 NB over Mar. Co. Rt. 73/73?

The structure is 285 ft (86.9 m) long with a longest span of 80 ft (24.4 m) and a deck 35 ft wide.

Who owns Interstate 79 NB over Mar. Co. Rt. 73/73?

It is owned by the State Highway Agency.