Structure 2781 · Platte County, MO

Is 435 N over Missouri Rvr

Carries Is 435 N over Missouri Rvr, S 31 T 51 N R 34 W.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT3,246 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

3,246 ft end to end, longest span 425 ft: about 9.0 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.

Built198541 years old
Length3246.1 ft989.4 m
Daily traffic11,209counted 2024
Last inspectedAugust 2024every 12 months

Location

StateMissouri
CountyPlatte
LocationS 31 T 51 N R 34 W
CarriesIs 435 N
CrossesMissouri Rvr
Coordinates39.19237, -94.76767

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length3246.1 ft (989.4 m)
Max Span424.9 ft (129.5 m)
Deck Width58.7 ft (17.9 m)
Deck Area17710.3 sq m
Main Spans3
Year Built1985

Traffic

Avg Daily Traffic11,209 (2024)
Truck Traffic12%
Lanes On Bridge3

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number2781

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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