Structure 30724 · DeKalb County, MO

NW Waldo RD over Lit Third Fk

Carries NW Waldo RD over Lit Third Fk, S 27 T 60 N R 32 W.

Overall conditionGood

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

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT59 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

59 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.

Built200422 years old
Length59.1 ft18 m
Daily traffic15counted 2024
Last inspectedDecember 2024every 24 months

Location

StateMissouri
CountyDeKalb
LocationS 27 T 60 N R 32 W
CarriesNW Waldo RD
CrossesLit Third Fk
Coordinates39.99061, -94.49085

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length59.1 ft (18 m)
Max Span57.7 ft (17.6 m)
Deck Width20.7 ft (6.3 m)
Deck Area113.4 sq m
Main Spans1
Year Built2004

Traffic

Avg Daily Traffic15 (2024)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number30724

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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