Structure 23750 · Knox County, IN

SR 58 over Singer Ditch

Carries SR 58 over Singer Ditch, 00.26 W SR 67.

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT100 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 100 ft across. 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, so those are drawn as typical for a culvert.

Built1932rebuilt 1969
Length99.7 ft30.4 m
Daily traffic3,225counted 2004
Last inspectedSeptember 2023every 24 months

Location

StateIndiana
CountyKnox
Location00.26 W SR 67
CarriesSR 58
CrossesSinger Ditch
Coordinates38.87401, -87.21349

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length99.7 ft (30.4 m)
Max Span59.7 ft (18.2 m)
Deck Width43.0 ft (13.1 m)
Deck Area398.2 sq m
Main Spans1
Year Built1932 (reconstructed 1969)

Traffic

Avg Daily Traffic3,225 (2004)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number023750

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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