Structure 3350347 · Hardin County, OH

Township Road 55 over Grass Run

Carries Township Road 55 over Grass Run, .3 Mi S Of Jct Of CR 50.

Overall conditionGood

Set by its lowest-rated component: Substructure at 8 of 9.

How ratings work
Deck9/9 · Excellent
Superstructure9/9 · Excellent
Substructuresets the rating8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT34 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 8/9 · sets the rating

34 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.

Built1989rebuilt 2002
Length34.1 ft10.4 m
Daily traffic228counted 2015
Last inspectedMay 2023every 24 months

Location

StateOhio
CountyHardin
Location.3 Mi S Of Jct Of CR 50
CarriesTownship Road 55
CrossesGrass Run
Coordinates40.75763, -83.80407

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length34.1 ft (10.4 m)
Max Span30.8 ft (9.4 m)
Deck Width24.0 ft (7.3 m)
Deck Area75.9 sq m
Main Spans1
Year Built1989 (reconstructed 2002)

Traffic

Avg Daily Traffic228 (2015)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number3350347

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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