Structure 1901699 · Darke County, OH

Sr118 over N Fork Stillwater River

Carries Sr118 over N Fork Stillwater River, 2.04 Mi. N. Jct. Sr-47.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT71 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

71 ft end to end, longest span 26 ft. 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 slab bridge.

Built197947 years old
Length70.9 ft21.6 m
Daily traffic2,074counted 2015
Last inspectedJuly 2023every 24 months

Location

StateOhio
CountyDarke
Location2.04 Mi. N. Jct. Sr-47
CarriesSr118
CrossesN Fork Stillwater River
Coordinates40.24374, -84.63662

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length70.9 ft (21.6 m)
Max Span25.9 ft (7.9 m)
Deck Width44.0 ft (13.4 m)
Deck Area289.4 sq m
Main Spans3
Year Built1979

Traffic

Avg Daily Traffic2,074 (2015)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1901699

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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