Structure 5530741 · Miami County, OH

Garnsey ST over Great Miami River

Carries Garnsey ST over Great Miami River, Garnsey ST Piqua.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT412 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 7/9

412 ft end to end, longest span 119 ft: about 6 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built196858 years old
Length412.1 ft125.6 m
Daily traffic7,242counted 2015
Last inspectedFebruary 2025every 12 months

Location

StateOhio
CountyMiami
LocationGarnsey ST Piqua
CarriesGarnsey ST
CrossesGreat Miami River
Coordinates40.13888, -84.23782

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length412.1 ft (125.6 m)
Max Span119.1 ft (36.3 m)
Deck Width39.0 ft (11.9 m)
Deck Area1494.6 sq m
Main Spans4
Year Built1968

Traffic

Avg Daily Traffic7,242 (2015)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2025
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number5530741

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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