Structure 38630 · Lake County, IN

I-65 SB over Turkey Creek

Carries I-65 SB over Turkey Creek, 02.70 N US 30.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT96 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

96 ft end to end, longest span 37 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 slab bridge.

Built1965rebuilt 2021
Length95.8 ft29.2 m
Daily traffic56,252counted 2004
Last inspectedMarch 2023every 24 months

Location

StateIndiana
CountyLake
Location02.70 N US 30
CarriesI-65 SB
CrossesTurkey Creek
Coordinates41.51008, -87.31990

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length95.8 ft (29.2 m)
Max Span37.4 ft (11.4 m)
Deck Width63.6 ft (19.4 m)
Deck Area566.5 sq m
Main Spans3
Year Built1965 (reconstructed 2021)

Traffic

Avg Daily Traffic56,252 (2004)
Truck Traffic19%
Lanes On Bridge3

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number038630

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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