Structure 4200176 · Knox County, IN

Snyder Road over Miller Ditch

Carries Snyder Road over Miller Ditch, 00.28 N Of State Road 67.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT58 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

58 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 multi-beam bridge.

Built1910rebuilt 2011
Length57.7 ft17.6 m
Daily traffic130counted 2013
Last inspectedSeptember 2023every 24 months

Location

StateIndiana
CountyKnox
Location00.28 N Of State Road 67
CarriesSnyder Road
CrossesMiller Ditch
Coordinates38.78745, -87.28689

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length57.7 ft (17.6 m)
Max Span52.2 ft (15.9 m)
Deck Width27.9 ft (8.5 m)
Deck Area149.6 sq m
Main Spans1
Year Built1910 (reconstructed 2011)

Traffic

Avg Daily Traffic130 (2013)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number4200176

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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