Structure 8350 · Starke County, IN

US 30 WB over Jain Ditch

Carries US 30 WB over Jain Ditch, 01.94 W SR 23.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very 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 FT61 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

61 ft end to end, longest span 24 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.

Built1963rebuilt 2004
Length61.4 ft18.7 m
Daily traffic6,793counted 2021
Last inspectedNovember 2024every 24 months

Location

StateIndiana
CountyStarke
Location01.94 W SR 23
CarriesUS 30 WB
CrossesJain Ditch
Coordinates41.37717, -86.54373

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length61.4 ft (18.7 m)
Max Span24.0 ft (7.3 m)
Deck Width44.9 ft (13.7 m)
Deck Area256.2 sq m
Main Spans3
Year Built1963 (reconstructed 2004)

Traffic

Avg Daily Traffic6,793 (2021)
Truck Traffic49%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number008350

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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