Structure 95801 · Mille Lacs County, MN

US 169 over Mike Drew Brook

Carries US 169 over Mike Drew Brook, 4.3 Mi N Of Jct TH 23.

Overall conditionFair

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

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT37 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 37 ft across with 2 openings. 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, so those are drawn as typical for a culvert.

Built198442 years old
Length37.4 ft11.4 m
Daily traffic6,740counted 2022
Last inspectedSeptember 2024every 24 months

Location

StateMinnesota
CountyMille Lacs
Location4.3 Mi N Of Jct TH 23
CarriesUS 169
CrossesMike Drew Brook
Coordinates45.81374, -93.65508

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length37.4 ft (11.4 m)
Max Span16.7 ft (5.1 m)
Deck Area573.4 sq m
Main Spans2
Year Built1984

Traffic

Avg Daily Traffic6,740 (2022)
Truck Traffic6%
Lanes On Bridge4

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number95801

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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