Structure 4805497 · Lucas County, OH

SR 246 (dorr St.) over Ir 75

Carries SR 246 (dorr St.) over Ir 75, Dorr St. Over Ir 75.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT315 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 8/9 · sets the rating

315 ft end to end, longest span 168 ft: about 4 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.

Built20197 years old
Length315.3 ft96.1 m
Daily traffic9,500counted 2018
Last inspectedJanuary 2025every 24 months

Location

StateOhio
CountyLucas
LocationDorr St. Over Ir 75
CarriesSR 246 (dorr St.)
CrossesIr 75
Coordinates41.65297, -83.55210

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length315.3 ft (96.1 m)
Max Span167.7 ft (51.1 m)
Deck Width60.0 ft (18.3 m)
Deck Area1758.6 sq m
Main Spans2
Year Built2019

Traffic

Avg Daily Traffic9,500 (2018)
Truck Traffic6%
Lanes On Bridge3
Lanes Under Bridge8

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number4805497

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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