Structure 35550 · Stoddard County, MO

County RD 413 over Delaware CR

Carries County RD 413 over Delaware CR, S 4 T 25 N R 10 E.

Overall conditionFair

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

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

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

A culvert 21 ft across with 2 openings. 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.

Built201610 years old
Length20.7 ft6.3 m
Daily traffic100counted 2023
Last inspectedJanuary 2025every 24 months

Location

StateMissouri
CountyStoddard
LocationS 4 T 25 N R 10 E
CarriesCounty RD 413
CrossesDelaware CR
Coordinates36.84078, -89.96833

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length20.7 ft (6.3 m)
Max Span10.8 ft (3.3 m)
Deck Width27.6 ft (8.4 m)
Deck Area52.9 sq m
Main Spans2
Year Built2016

Traffic

Avg Daily Traffic100 (2023)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number35550

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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