Structure 20028 · Jackson County, MO

EB Chipman RD over Up Rr

Carries EB Chipman RD over Up Rr, S 6 T 47 N R 31 W.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT156 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 6/9

156 ft end to end, longest span 60 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.

Built197155 years old
Length155.8 ft47.5 m
Daily traffic8,700counted 2024
Last inspectedJanuary 2023every 24 months

Location

StateMissouri
CountyJackson
LocationS 6 T 47 N R 31 W
CarriesEB Chipman RD
CrossesUp Rr
Coordinates38.92519, -94.38771

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length155.8 ft (47.5 m)
Max Span60.0 ft (18.3 m)
Deck Width35.8 ft (10.9 m)
Deck Area517.8 sq m
Main Spans3
Year Built1971

Traffic

Avg Daily Traffic8,700 (2024)
Truck Traffic20%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number20028

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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