Structure 55561 · Olmsted County, MN

Csah 22 over Dm;e Rr

Carries Csah 22 over Dm;e Rr, 0.1 Mi N Of Jct TH 14.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT316 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

316 ft end to end, longest span 66 ft: about 4 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built199630 years old
Length315.6 ft96.2 m
Daily traffic23,683counted 2021
Last inspectedNovember 2023every 24 months

Location

StateMinnesota
CountyOlmsted
Location0.1 Mi N Of Jct TH 14
CarriesCsah 22
CrossesDm;e Rr
Coordinates44.03891, -92.51833

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length315.6 ft (96.2 m)
Max Span66.3 ft (20.2 m)
Deck Width116.8 ft (35.6 m)
Deck Area3424.7 sq m
Main Spans5
Year Built1996

Traffic

Avg Daily Traffic23,683 (2021)
Lanes On Bridge6

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number55561

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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