Structure 29827 · Jackson County, MO

Old HWY 40 over Blue Br

Carries Old HWY 40 over Blue Br, S 35 T 49 N R 30 W.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT118 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

118 ft end to end. Lengths and the car 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.

Built200323 years old
Length118.1 ft36 m
Daily traffic1,582counted 2024
Last inspectedFebruary 2023every 24 months

Location

StateMissouri
CountyJackson
LocationS 35 T 49 N R 30 W
CarriesOld HWY 40
CrossesBlue Br
Coordinates39.01329, -94.18640

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length118.1 ft (36 m)
Max Span115.2 ft (35.1 m)
Deck Width39.0 ft (11.9 m)
Deck Area428.4 sq m
Main Spans1
Year Built2003

Traffic

Avg Daily Traffic1,582 (2024)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number29827

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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