Structure 20016 · Dodge County, MN

Mn 57 over Milliken Creek

Carries Mn 57 over Milliken Creek, 0.5 Mi S Of Jct Csah 22.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT106 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

106 ft end to end, longest span 38 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 multi-beam bridge.

Built20197 years old
Length106.0 ft32.3 m
Daily traffic1,441counted 2022
Last inspectedOctober 2023every 24 months

Location

StateMinnesota
CountyDodge
Location0.5 Mi S Of Jct Csah 22
CarriesMn 57
CrossesMilliken Creek
Coordinates44.12719, -92.77911

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length106.0 ft (32.3 m)
Max Span38.4 ft (11.7 m)
Deck Width39.0 ft (11.9 m)
Deck Area384.4 sq m
Main Spans3
Year Built2019

Traffic

Avg Daily Traffic1,441 (2022)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number20016

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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