Structure 1700127 · DeKalb County, IN

S County Line RD over Hilkey Ditch

Carries S County Line RD over Hilkey Ditch, 01.50 W CR 39.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

30 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 slab bridge.

Built197848 years old
Length29.9 ft9.1 m
Daily traffic375counted 2024
Last inspectedOctober 2024every 24 months

Location

StateIndiana
CountyDeKalb
Location01.50 W CR 39
CarriesS County Line RD
CrossesHilkey Ditch
Coordinates41.26641, -85.02898

Physical Characteristics

MaterialWood or Timber
DesignSlab
Total Length29.9 ft (9.1 m)
Max Span27.9 ft (8.5 m)
Deck Width26.2 ft (8 m)
Deck Area72.8 sq m
Main Spans1
Year Built1978

Traffic

Avg Daily Traffic375 (2024)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1700127

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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