Structure 6666 · Clay County, MO

Mo 10 W over US 69

Carries Mo 10 W over US 69, S 10 T 52 N R 30 W.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT161 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

161 ft end to end, longest span 55 ft: about 2 semi-trucks nose to tail. Lengths and the semi-truck 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 multi-beam bridge.

Built1954rebuilt 2010
Length161.1 ft49.1 m
Daily traffic6,169counted 2024
Last inspectedSeptember 2024every 24 months

Location

StateMissouri
CountyClay
LocationS 10 T 52 N R 30 W
CarriesMo 10 W
CrossesUS 69
Coordinates39.33477, -94.26023

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length161.1 ft (49.1 m)
Max Span55.1 ft (16.8 m)
Deck Width28.5 ft (8.7 m)
Deck Area427.2 sq m
Main Spans3
Year Built1954 (reconstructed 2010)

Traffic

Avg Daily Traffic6,169 (2024)
Truck Traffic3%
Lanes On Bridge1
Lanes Under Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number6666

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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