Structure 5393 · Marion County, MO

US 61 S over Minnow CR

Carries US 61 S over Minnow CR, S 30 T 57 N R 4 W.

Overall conditionFair

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

How ratings work
Culvertsets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT46 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 5/9

A culvert 46 ft across with 3 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.

Built1930rebuilt 1964
Length46.3 ft14.1 m
Daily traffic29,762counted 2024
Last inspectedOctober 2023every 24 months

Location

StateMissouri
CountyMarion
LocationS 30 T 57 N R 4 W
CarriesUS 61 S
CrossesMinnow CR
Coordinates39.71015, -91.39126

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length46.3 ft (14.1 m)
Max Span12.1 ft (3.7 m)
Deck Area266.5 sq m
Main Spans3
Year Built1930 (reconstructed 1964)

Traffic

Avg Daily Traffic29,762 (2024)
Truck Traffic24%
Lanes On Bridge4

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number5393

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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