Structure 24J36 · Freeborn County, MN

Csah 18 over Co Ditch # 55

Carries Csah 18 over Co Ditch # 55, 0.6 Mi N Of Jct Csah 5.

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 overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT29 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 29 ft across with 2 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
Length28.5 ft8.7 m
Daily traffic310counted 2017
Last inspectedDecember 2023every 48 months

Location

StateMinnesota
CountyFreeborn
Location0.6 Mi N Of Jct Csah 5
CarriesCsah 18
CrossesCo Ditch # 55
Coordinates43.54455, -93.36862

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length28.5 ft (8.7 m)
Max Span12.8 ft (3.9 m)
Deck Area85.3 sq m
Main Spans2
Year Built2004

Traffic

Avg Daily Traffic310 (2017)
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number24J36

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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