Structure 5407 · Red Lake County, MN

M 12 over Clearwater River

Carries M 12 over Clearwater River, 0.1 Mi W Of Jct TH 59.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT68 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 6/9

68 ft end to end. 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 girder bridge.

Built193591 years old
Length67.9 ft20.7 m
Daily traffic59counted 1971
Last inspectedAugust 2024every 12 months

Location

StateMinnesota
CountyRed Lake
Location0.1 Mi W Of Jct TH 59
CarriesM 12
CrossesClearwater River
Coordinates47.92342, -96.04587

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length67.9 ft (20.7 m)
Max Span64.0 ft (19.5 m)
Deck Width28.9 ft (8.8 m)
Deck Area182.2 sq m
Main Spans1
Year Built1935

Traffic

Avg Daily Traffic59 (1971)
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 12 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical2 — Bridge closed (monitoring)
Structure Number5407

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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