Structure 24910 · Boone County, IN

SR 75 over Wolf Creek

Carries SR 75 over Wolf Creek, 01.91 S SR 47.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT89 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

89 ft end to end, longest span 36 ft. 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 multi-beam bridge.

Built1936rebuilt 1982
Length88.9 ft27.1 m
Daily traffic1,587counted 2021
Last inspectedDecember 2023every 24 months

Location

StateIndiana
CountyBoone
Location01.91 S SR 47
CarriesSR 75
CrossesWolf Creek
Coordinates40.10578, -86.61941

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length88.9 ft (27.1 m)
Max Span36.1 ft (11 m)
Deck Width44.3 ft (13.5 m)
Deck Area365.9 sq m
Main Spans3
Year Built1936 (reconstructed 1982)

Traffic

Avg Daily Traffic1,587 (2021)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number024910

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.

Nearby Bridges