US Bridges

Mon CO Rt. 68/7 over Knocking Run

PoorPosted for load

Monongalia County, West Virginia · 0.02 MI East CO Rt 7/40 · Structure no. 00000000031A905

Built
1912
113 years old
Condition
Poor
inspected May 2023
Type
Arch - Deck
Concrete
Length
31 ft
1 main span
Daily traffic
1,200
2020 count
Owner
State
State Highway Agency

About this bridge

Mon CO Rt. 68/7 over Knocking Run is a concrete arch - deck carrying Mon CO Rt. 68/7 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 1,200 vehicles a day, roughly 6% of them trucks, projected to reach 1,860 by 2041. The structure is 31 ft (9.4 m) long and 20 ft wide.

Location

Open in Google Maps
CarriesMon CO Rt. 68/7
CrossesKnocking Run
Location0.02 MI East CO Rt 7/40
RouteCounty Highway 687
CountyMonongalia County
StateWest Virginia
Coordinates39.62324, -79.9226
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating34.9 US tons
Inventory rating16 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span31 ft (9.4 m)
Deck width20 ft (6.1 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2020)
Projected traffic1,860 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$997,000 (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 1912, making it 113 years old in 2025.

What condition is Mon CO Rt. 68/7 over Knocking Run in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

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

About 1,200 vehicles per day (2020 count), of which roughly 6% are trucks.

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

The structure is 31 ft (9.4 m) long with a longest span of 31 ft (9.4 m) and a deck 20 ft wide.

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

It is owned by the State Highway Agency.