US Bridges

Marion County 18 over Plum Run

PoorPosted for load

Marion County, West Virginia · 0.18 MI South CO Rt 18/1 · Structure no. 00000000025A039

Built
1925
100 years old
Condition
Poor
inspected March 2024
Type
Arch - Deck
Concrete
Length
31 ft
1 main span
Daily traffic
300
2022 count
Owner
State
State Highway Agency

About this bridge

Marion County 18 over Plum Run is a concrete arch - deck carrying Marion County 18 over Plum Run in Marion County, West Virginia. It was built in 1925, so it is 100 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 300 vehicles a day, roughly 8% of them trucks, projected to reach 470 by 2041. The structure is 31 ft (9.3 m) long and 19 ft wide.

Location

Open in Google Maps
CarriesMarion County 18
CrossesPlum Run
Location0.18 MI South CO Rt 18/1
RouteCounty Highway 1800
CountyMarion County
StateWest Virginia
Coordinates39.5592, -80.28316
Functional classRural Minor 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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2024
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating52 US tons
Inventory rating19 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length31 ft (9.3 m)
Longest span31 ft (9.3 m)
Deck width19 ft (5.7 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2022)
Projected traffic470 by 2041
Trucks8%
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$548,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Marion County 18 over Plum Run built?

It was built in 1925, making it 100 years old in 2025.

What condition is Marion County 18 over Plum 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 March 2024.

How much traffic does Marion County 18 over Plum Run carry?

About 300 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Marion County 18 over Plum Run?

The structure is 31 ft (9.3 m) long with a longest span of 31 ft (9.3 m) and a deck 19 ft wide.

Who owns Marion County 18 over Plum Run?

It is owned by the State Highway Agency.