Structure 25416 · Jackson County, MO

Oak ST over Kct Railway 20th Street

Carries Oak ST over Kct Railway 20th Street, S 8 T 49 N R 33 W.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT729 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

729 ft end to end, longest span 100 ft: about 2.0 football fields. 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.

Built1930rebuilt 1990
Length729.0 ft222.2 m
Daily traffic7,794counted 2024
Last inspectedMarch 2024every 24 months

Location

StateMissouri
CountyJackson
LocationS 8 T 49 N R 33 W
CarriesOak ST
CrossesKct Railway 20th Street
Coordinates39.08737, -94.57922

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length729.0 ft (222.2 m)
Max Span100.1 ft (30.5 m)
Deck Width81.4 ft (24.8 m)
Deck Area5510.6 sq m
Main Spans11
Year Built1930 (reconstructed 1990)

Traffic

Avg Daily Traffic7,794 (2024)
Truck Traffic6%
Lanes On Bridge5
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number25416

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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