Structure 19013 · Dakota County, MN

Mn 77 over Up Rr

Carries Mn 77 over Up Rr, 0.3 Mi N Of Jct TH 13.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT217 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 7/9

217 ft end to end, longest span 106 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.

Built197848 years old
Length217.2 ft66.2 m
Daily traffic45,951counted 2022
Last inspectedJuly 2024every 24 months

Location

StateMinnesota
CountyDakota
Location0.3 Mi N Of Jct TH 13
CarriesMn 77
CrossesUp Rr
Coordinates44.81977, -93.22412

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length217.2 ft (66.2 m)
Max Span105.6 ft (32.2 m)
Deck Width62.3 ft (19 m)
Deck Area1257.8 sq m
Main Spans2
Year Built1978

Traffic

Avg Daily Traffic45,951 (2022)
Truck Traffic3%
Lanes On Bridge3

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 Number19013

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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