Structure 27203 · Hennepin County, MN

Csah 81 over TH 100

Carries Csah 81 over TH 100, At Jct TH 100; Csah 81.

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 120 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.

Built200125 years old
Length218.2 ft66.5 m
Daily traffic33,513counted 2022
Last inspectedJuly 2023every 24 months

Location

StateMinnesota
CountyHennepin
LocationAt Jct TH 100; Csah 81
CarriesCsah 81
CrossesTH 100
Coordinates45.03638, -93.34299

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length218.2 ft (66.5 m)
Max Span119.8 ft (36.5 m)
Deck Width95.5 ft (29.1 m)
Deck Area1935.2 sq m
Main Spans2
Year Built2001

Traffic

Avg Daily Traffic33,513 (2022)
Truck Traffic9%
Lanes On Bridge5
Lanes Under Bridge6

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number27203

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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