Structure 3829 · Audrain County, MO

US 54 W over Scattering Fk

Carries US 54 W over Scattering Fk, S 15 T 50 N R 9 W.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT115 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

115 ft end to end, longest span 39 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 tee-beam bridge.

Built198937 years old
Length115.2 ft35.1 m
Daily traffic6,078counted 2024
Last inspectedOctober 2023every 24 months

Location

StateMissouri
CountyAudrain
LocationS 15 T 50 N R 9 W
CarriesUS 54 W
CrossesScattering Fk
Coordinates39.10722, -91.89666

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignTee Beam
Total Length115.2 ft (35.1 m)
Max Span38.7 ft (11.8 m)
Deck Width41.3 ft (12.6 m)
Deck Area442.3 sq m
Main Spans3
Year Built1989

Traffic

Avg Daily Traffic6,078 (2024)
Truck Traffic30%
Lanes On Bridge2

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 Number3829

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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