US Bridges

Mon CO Rt 7/40 over Knocking Run

FairPosted for load

Monongalia County, West Virginia · 0.01 MI South CO Rt 68/7 · Structure no. 00000000031A267

Built
1912
113 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
250
2019 count
Owner
State
State Highway Agency

About this bridge

Mon CO Rt 7/40 over Knocking Run is a concrete slab carrying Mon CO Rt 7/40 over Knocking Run in Monongalia County, West Virginia. It was built in 1912, so it is 113 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. Its operating status is: posted for load restriction.

It carries about 250 vehicles a day, roughly 6% of them trucks, projected to reach 390 by 2041. The structure is 26 ft (8 m) long and 22 ft wide.

Location

Open in Google Maps
CarriesMon CO Rt 7/40
CrossesKnocking Run
Location0.01 MI South CO Rt 68/7
RouteCounty Highway 740
CountyMonongalia County
StateWest Virginia
Coordinates39.62315, -79.92293
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating28 US tons
Inventory rating13 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length26 ft (8 m)
Longest span24 ft (7.3 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2019)
Projected traffic390 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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$449,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mon CO Rt 7/40 over Knocking Run built?

It was built in 1912, making it 113 years old in 2025.

What condition is Mon CO Rt 7/40 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 April 2023.

How much traffic does Mon CO Rt 7/40 over Knocking Run carry?

About 250 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is Mon CO Rt 7/40 over Knocking Run?

The structure is 26 ft (8 m) long with a longest span of 24 ft (7.3 m) and a deck 22 ft wide.

Who owns Mon CO Rt 7/40 over Knocking Run?

It is owned by the State Highway Agency.