Structure 31A208 · Monongalia County, WV

Mon Co RT 857 over Darnell Run

Carries Mon Co RT 857 over Darnell Run, 0.02 Mi South Co RT 69/2.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 6 of 9.

How ratings work
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT27 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 6/9 · sets the ratingSubstructure 7/9

27 ft end to end. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a deck arch.

Built193690 years old
Length26.9 ft8.2 m
Daily traffic1,800counted 2020
Last inspectedMarch 2023every 24 months

Location

StateWest Virginia
CountyMonongalia
Location0.02 Mi South Co RT 69/2
CarriesMon Co RT 857
CrossesDarnell Run
Coordinates39.69711, -79.81673

Physical Characteristics

MaterialMasonry
DesignArch - Deck
Total Length26.9 ft (8.2 m)
Max Span24.0 ft (7.3 m)
Deck Width36.4 ft (11.1 m)
Deck Area91.0 sq m
Main Spans1
Year Built1936

Traffic

Avg Daily Traffic1,800 (2020)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number00000000031A208

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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