Structure 4120 · Elkhart County, IN

SR 15 over Whitehead Ditch

Carries SR 15 over Whitehead Ditch, 02.80 N US 6.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT41 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 7/9

41 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 box-beam bridge.

Built1929rebuilt 1983
Length40.7 ft12.4 m
Daily traffic10,805counted 2020
Last inspectedJune 2024every 12 months

Location

StateIndiana
CountyElkhart
Location02.80 N US 6
CarriesSR 15
CrossesWhitehead Ditch
Coordinates41.48953, -85.83559

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Single/Spread
Total Length40.7 ft (12.4 m)
Max Span37.4 ft (11.4 m)
Deck Width46.3 ft (14.1 m)
Deck Area174.8 sq m
Main Spans1
Year Built1929 (reconstructed 1983)

Traffic

Avg Daily Traffic10,805 (2020)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number004120

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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