Structure 79710 · Hamilton County, IN

US 31 NB over Unt Cool Creek

Carries US 31 NB over Unt Cool Creek, 2.08 S SR 32.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT67 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

67 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 multi-beam bridge.

Built201412 years old
Length66.9 ft20.4 m
Daily traffic75,763counted 2021
Last inspectedSeptember 2024every 24 months

Location

StateIndiana
CountyHamilton
Location2.08 S SR 32
CarriesUS 31 NB
CrossesUnt Cool Creek
Coordinates40.01315, -86.12850

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length66.9 ft (20.4 m)
Max Span65.0 ft (19.8 m)
Deck Width74.5 ft (22.7 m)
Deck Area463.1 sq m
Main Spans1
Year Built2014

Traffic

Avg Daily Traffic75,763 (2021)
Truck Traffic7%
Lanes On Bridge4

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number079710

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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