Structure 9112 · Chippewa County, MN

M 24 over TH 29

Carries M 24 over TH 29, 1.0 Mi N Of Jct Th212.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT139 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

139 ft end to end, longest span 61 ft. 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.

Built195967 years old
Length138.8 ft42.3 m
Daily traffic2,550counted 2012
Last inspectedSeptember 2024every 24 months

Location

StateMinnesota
CountyChippewa
Location1.0 Mi N Of Jct Th212
CarriesM 24
CrossesTH 29
Coordinates44.95088, -95.72541

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length138.8 ft (42.3 m)
Max Span61.0 ft (18.6 m)
Deck Width37.4 ft (11.4 m)
Deck Area482.2 sq m
Main Spans3
Year Built1959

Traffic

Avg Daily Traffic2,550 (2012)
Lanes On Bridge2
Lanes Under Bridge3

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number9112

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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