Structure 34983 · Cass County, MO

323rd ST over Unnamed CR

Carries 323rd ST over Unnamed CR, S 9 T 43 N R 29 W.

Overall conditionGood

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

How ratings work
Culvertsets the rating9/9 · Excellent
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
20 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 9/9

A culvert 20 ft across. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built201115 years old
Length20.3 ft6.2 m
Daily traffic100counted 2024
Last inspectedApril 2023every 24 months

Location

StateMissouri
CountyCass
LocationS 9 T 43 N R 29 W
Carries323rd ST
CrossesUnnamed CR
Coordinates38.52517, -94.12564

Physical Characteristics

MaterialAluminum/Wrought Iron/Cast Iron
DesignCulvert
Total Length20.3 ft (6.2 m)
Max Span20.3 ft (6.2 m)
Deck Area49.0 sq m
Main Spans1
Year Built2011

Traffic

Avg Daily Traffic100 (2024)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number34983

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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