Structure 4614 · Atchison County, MO

US 59 S over CR

Carries US 59 S over CR, S 15 T 64 N R 40 W.

Overall conditionPoor

Set by its lowest-rated component: Culvert at 4 of 9.

How ratings work
Culvertsets the rating4/9 · Poor
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
20 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 4/9

A culvert 20 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.

Built1922rebuilt 1936
Length20.0 ft6.1 m
Daily traffic1,739counted 2024
Last inspectedJanuary 2025every 12 months

Location

StateMissouri
CountyAtchison
LocationS 15 T 64 N R 40 W
CarriesUS 59 S
CrossesCR
Coordinates40.36466, -95.39711

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length20.0 ft (6.1 m)
Max Span9.5 ft (2.9 m)
Deck Width39.0 ft (11.9 m)
Deck Area72.6 sq m
Main Spans2
Year Built1922 (reconstructed 1936)

Traffic

Avg Daily Traffic1,739 (2024)
Truck Traffic24%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number4614

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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