Structure 55080 · Olmsted County, MN

Csah 12 over US 52

Carries Csah 12 over US 52, 8.2 Mi N Of N Jct TH 14.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT218 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

218 ft end to end, longest span 107 ft: about 3 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.

Built200620 years old
Length217.8 ft66.4 m
Daily traffic3,950counted 2014
Last inspectedSeptember 2024every 24 months

Location

StateMinnesota
CountyOlmsted
Location8.2 Mi N Of N Jct TH 14
CarriesCsah 12
CrossesUS 52
Coordinates44.14436, -92.52810

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length217.8 ft (66.4 m)
Max Span106.6 ft (32.5 m)
Deck Width59.4 ft (18.1 m)
Deck Area1201.8 sq m
Main Spans2
Year Built2006

Traffic

Avg Daily Traffic3,950 (2014)
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number55080

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.

Nearby Bridges