Structure 6636 · Jackson County, MO

Is 70 E over Cst Sterling AVE

Carries Is 70 E over Cst Sterling AVE, S 21 T 49 N R 32 W.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT157 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

157 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.

Built1962rebuilt 1984
Length157.2 ft47.9 m
Daily traffic54,500counted 2024
Last inspectedSeptember 2023every 24 months

Location

StateMissouri
CountyJackson
LocationS 21 T 49 N R 32 W
CarriesIs 70 E
CrossesCst Sterling AVE
Coordinates39.04724, -94.44762

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length157.2 ft (47.9 m)
Max Span60.0 ft (18.3 m)
Deck Width63.3 ft (19.3 m)
Deck Area924.5 sq m
Main Spans3
Year Built1962 (reconstructed 1984)

Traffic

Avg Daily Traffic54,500 (2024)
Truck Traffic18%
Lanes On Bridge4
Lanes Under Bridge4

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number6636

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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