Structure 3333671 · Hardin County, OH

Township Road 180 over Silver Creek

Carries Township Road 180 over Silver Creek, .6 Mi E Of Jct Of C R 115.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 8/9

30 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 multi-beam bridge.

Built196561 years old
Length29.9 ft9.1 m
Daily traffic324counted 2015
Last inspectedSeptember 2024every 12 months

Location

StateOhio
CountyHardin
Location.6 Mi E Of Jct Of C R 115
CarriesTownship Road 180
CrossesSilver Creek
Coordinates40.58992, -83.66267

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length29.9 ft (9.1 m)
Max Span24.0 ft (7.3 m)
Deck Width24.0 ft (7.3 m)
Deck Area66.4 sq m
Main Spans1
Year Built1965

Traffic

Avg Daily Traffic324 (2015)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number3333671

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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