Structure 35915 · Johnson County, IN

I-65 over Drainage Ditch

Carries I-65 over Drainage Ditch, 05.80 S I-465.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets 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 FT29 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 29 ft across with 2 openings. 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.

Built1971rebuilt 2015
Length28.9 ft8.8 m
Daily traffic92,074counted 2021
Last inspectedAugust 2024every 24 months

Location

StateIndiana
CountyJohnson
Location05.80 S I-465
CarriesI-65
CrossesDrainage Ditch
Coordinates39.62734, -86.07416

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length28.9 ft (8.8 m)
Max Span11.5 ft (3.5 m)
Deck Width131.9 ft (40.2 m)
Deck Area353.8 sq m
Main Spans2
Year Built1971 (reconstructed 2015)

Traffic

Avg Daily Traffic92,074 (2021)
Truck Traffic10%
Lanes On Bridge8

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number035915

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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