Structure 200308 · Allen County, IN

Windmore RD over Natural Drain

Carries Windmore RD over Natural Drain, 00.40 W Iron Bridge RD.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT26 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 7/9

26 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 slab bridge.

Built197650 years old
Length25.9 ft7.9 m
Daily traffic16counted 2018
Last inspectedMay 2024every 24 months

Location

StateIndiana
CountyAllen
Location00.40 W Iron Bridge RD
CarriesWindmore RD
CrossesNatural Drain
Coordinates40.98912, -85.30018

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length25.9 ft (7.9 m)
Max Span23.0 ft (7 m)
Deck Width24.0 ft (7.3 m)
Deck Area57.7 sq m
Main Spans1
Year Built1976

Traffic

Avg Daily Traffic16 (2018)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number0200308

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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