Structure 7400233 · Spencer County, IN

CR 100n over Tower Drain

Carries CR 100n over Tower Drain, 00.64 W Of SR 66.

Overall conditionFair

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

How ratings work
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT113 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 5/9 · sets the ratingSubstructure 7/9

113 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 deck arch.

Built192997 years old
Length112.9 ft34.4 m
Daily traffic890counted 2022
Last inspectedSeptember 2024every 24 months

Location

StateIndiana
CountySpencer
Location00.64 W Of SR 66
CarriesCR 100n
CrossesTower Drain
Coordinates37.90359, -87.24838

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length112.9 ft (34.4 m)
Max Span56.8 ft (17.3 m)
Deck Width24.9 ft (7.6 m)
Deck Area261.4 sq m
Main Spans1
Year Built1929

Traffic

Avg Daily Traffic890 (2022)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number7400233

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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