Structure 43009 · McLeod County, MN

Mn 15 over Buffalo Creek

Carries Mn 15 over Buffalo Creek, 3.0 Mi N Of Brownton.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT91 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 8/9

91 ft end to end, longest span 35 ft. Lengths and the car 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 slab bridge.

Built199828 years old
Length91.2 ft27.8 m
Daily traffic3,654counted 2021
Last inspectedSeptember 2024every 24 months

Location

StateMinnesota
CountyMcLeod
Location3.0 Mi N Of Brownton
CarriesMn 15
CrossesBuffalo Creek
Coordinates44.75756, -94.37442

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length91.2 ft (27.8 m)
Max Span35.1 ft (10.7 m)
Deck Width51.2 ft (15.6 m)
Deck Area433.7 sq m
Main Spans3
Year Built1998

Traffic

Avg Daily Traffic3,654 (2021)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number43009

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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