Structure 55J10 · Olmsted County, MN

T 29 over Unnamed Stream

Carries T 29 over Unnamed Stream, 0.2 Mi S Csah 35 On 11 A.

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 FT37 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 37 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.

Built199729 years old
Length37.1 ft11.3 m
Daily traffic4counted 1997
Last inspectedNovember 2024every 48 months

Location

StateMinnesota
CountyOlmsted
Location0.2 Mi S Csah 35 On 11 A
CarriesT 29
CrossesUnnamed Stream
Coordinates43.85945, -92.50724

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length37.1 ft (11.3 m)
Max Span15.1 ft (4.6 m)
Deck Area96.0 sq m
Main Spans2
Year Built1997

Traffic

Avg Daily Traffic4 (1997)
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 48 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number55J10

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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