Structure 55068 · Olmsted County, MN

Msas 155 over TH 63

Carries Msas 155 over TH 63, 1.7 Mi S Of Jct TH 52; 63.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT236 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

236 ft end to end, longest span 115 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.

Built200323 years old
Length235.6 ft71.8 m
Daily traffic11,000counted 2016
Last inspectedJuly 2024every 24 months

Location

StateMinnesota
CountyOlmsted
Location1.7 Mi S Of Jct TH 52; 63
CarriesMsas 155
CrossesTH 63
Coordinates43.95306, -92.46841

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length235.6 ft (71.8 m)
Max Span115.5 ft (35.2 m)
Deck Width115.5 ft (35.2 m)
Deck Area2527.4 sq m
Main Spans2
Year Built2003

Traffic

Avg Daily Traffic11,000 (2016)
Lanes On Bridge4
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number55068

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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