Structure 3049 · Buchanan County, MO

US 36 E over Missouri Rvr

Carries US 36 E over Missouri Rvr, S 19 T 57 N R 35 W.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,718 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

1,718 ft end to end, longest span 425 ft: about 4.8 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.

Built198343 years old
Length1717.8 ft523.6 m
Daily traffic7,271counted 2024
Last inspectedSeptember 2024every 24 months

Location

StateMissouri
CountyBuchanan
LocationS 19 T 57 N R 35 W
CarriesUS 36 E
CrossesMissouri Rvr
Coordinates39.74861, -94.85889

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1717.8 ft (523.6 m)
Max Span424.9 ft (129.5 m)
Deck Width42.7 ft (13 m)
Deck Area6806.8 sq m
Main Spans8
Year Built1983

Traffic

Avg Daily Traffic7,271 (2024)
Truck Traffic20%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure Number3049

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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