Structure 8533 · Brown County, MN

Csah 29 over Dm E Rr

Carries Csah 29 over Dm E Rr, 0.8 Mi SE Of Jct Csah 12.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT245 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

245 ft end to end, longest span 90 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.

Built198838 years old
Length244.8 ft74.6 m
Daily traffic5,400counted 2018
Last inspectedOctober 2024every 24 months

Location

StateMinnesota
CountyBrown
Location0.8 Mi SE Of Jct Csah 12
CarriesCsah 29
CrossesDm E Rr
Coordinates44.33860, -94.50781

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length244.8 ft (74.6 m)
Max Span89.9 ft (27.4 m)
Deck Width43.3 ft (13.2 m)
Deck Area984.7 sq m
Main Spans3
Year Built1988

Traffic

Avg Daily Traffic5,400 (2018)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number08533

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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