Structure 1908 · Buchanan County, MO

Is 229 S over US 59

Carries Is 229 S over US 59, S 8 T 57 N R 35 W.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT242 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

242 ft end to end, longest span 91 ft: about 3 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.

Built197947 years old
Length242.1 ft73.8 m
Daily traffic4,117counted 2024
Last inspectedJuly 2024every 24 months

Location

StateMissouri
CountyBuchanan
LocationS 8 T 57 N R 35 W
CarriesIs 229 S
CrossesUS 59
Coordinates39.77052, -94.86140

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length242.1 ft (73.8 m)
Max Span90.9 ft (27.7 m)
Deck Width40.7 ft (12.4 m)
Deck Area915.1 sq m
Main Spans3
Year Built1979

Traffic

Avg Daily Traffic4,117 (2024)
Truck Traffic22%
Lanes On Bridge2
Lanes Under Bridge1

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number1908

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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