US Bridges

Mon. Co. Rt. 68/7 over Knocking Run

Fair

Monongalia County, West Virginia · 0.05 MI East CO Rt 7/40 · Structure no. 00000000031A906

Built
1974
51 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
900
2022 count
Owner
State
State Highway Agency

About this bridge

Mon. Co. Rt. 68/7 over Knocking Run is a steel stringer/multi-beam or girder carrying Mon. Co. Rt. 68/7 over Knocking Run in Monongalia County, West Virginia. It was built in 1974, so it is 51 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 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 900 vehicles a day, roughly 6% of them trucks, projected to reach 1,395 by 2041. The structure is 35 ft (10.7 m) long and 26 ft wide.

Location

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CarriesMon. Co. Rt. 68/7
CrossesKnocking Run
Location0.05 MI East CO Rt 7/40
RouteCounty Highway 687
CountyMonongalia County
StateWest Virginia
Coordinates39.62317, -79.92172
Functional classUrban Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating58 US tons
Inventory rating34.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span30 ft (9.2 m)
Deck width26 ft (7.8 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic900 (2022)
Projected traffic1,395 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$611,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mon. Co. Rt. 68/7 over Knocking Run built?

It was built in 1974, making it 51 years old in 2025.

What condition is Mon. Co. Rt. 68/7 over Knocking Run 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 May 2023.

How much traffic does Mon. Co. Rt. 68/7 over Knocking Run carry?

About 900 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Mon. Co. Rt. 68/7 over Knocking Run?

The structure is 35 ft (10.7 m) long with a longest span of 30 ft (9.2 m) and a deck 26 ft wide.

Who owns Mon. Co. Rt. 68/7 over Knocking Run?

It is owned by the State Highway Agency.