Structure 32J30 · Jackson County, MN

Csah 34 over Little Sioux River

Carries Csah 34 over Little Sioux River, 14.7 Mi W Of Jackson.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets the rating8/9 · Very Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT42 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 42 ft across with 3 openings. 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, so those are drawn as typical for a culvert.

Built200422 years old
Length41.7 ft12.7 m
Daily traffic430counted 2012
Last inspectedNovember 2022every 48 months

Location

StateMinnesota
CountyJackson
Location14.7 Mi W Of Jackson
CarriesCsah 34
CrossesLittle Sioux River
Coordinates43.61663, -95.26955

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length41.7 ft (12.7 m)
Max Span14.1 ft (4.3 m)
Deck Area139.7 sq m
Main Spans3
Year Built2004

Traffic

Avg Daily Traffic430 (2012)
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2022
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number32J30

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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