Structure 6865 · Rice County, MN

Mn 3 over Cannon River

Carries Mn 3 over Cannon River, 0.2 Mi S Of S Jct TH 19.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT263 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

263 ft end to end, longest span 100 ft: about 4 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.

Built195670 years old
Length262.8 ft80.1 m
Daily traffic19,968counted 2022
Last inspectedJune 2023every 24 months

Location

StateMinnesota
CountyRice
Location0.2 Mi S Of S Jct TH 19
CarriesMn 3
CrossesCannon River
Coordinates44.45328, -93.16603

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length262.8 ft (80.1 m)
Max Span100.1 ft (30.5 m)
Deck Width64.6 ft (19.7 m)
Deck Area1578.0 sq m
Main Spans3
Year Built1956

Traffic

Avg Daily Traffic19,968 (2022)
Truck Traffic8%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number6865

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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