Structure 5510001 · Miami County, OH

Ir 75 over CR 25a

Carries Ir 75 over CR 25a, 3.57mi.s. Of Jct. Usr-36.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT252 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

252 ft end to end, longest span 80 ft: about 3 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.

Built201610 years old
Length252.0 ft76.8 m
Daily traffic47,580counted 2015
Last inspectedJuly 2024every 24 months

Location

StateOhio
CountyMiami
Location3.57mi.s. Of Jct. Usr-36
CarriesIr 75
CrossesCR 25a
Coordinates40.10109, -84.22759

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length252.0 ft (76.8 m)
Max Span80.1 ft (24.4 m)
Deck Width63.0 ft (19.2 m)
Deck Area1474.6 sq m
Main Spans4
Year Built2016

Traffic

Avg Daily Traffic47,580 (2015)
Truck Traffic29%
Lanes On Bridge3
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number5510001

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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