Structure 34681 · Polk County, MO

Grant RD over Slagle CR

Carries Grant RD over Slagle CR, S 13 T 32 N R 23 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
CAR · 15 FT37 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

37 ft end to end, longest span 8 ft. 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 slab bridge.

Built201214 years old
Length37.1 ft11.3 m
Daily traffic30counted 2024
Last inspectedApril 2024every 24 months

Location

StateMissouri
CountyPolk
LocationS 13 T 32 N R 23 W
CarriesGrant RD
CrossesSlagle CR
Coordinates37.50494, -93.39836

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length37.1 ft (11.3 m)
Max Span7.9 ft (2.4 m)
Deck Width22.6 ft (6.9 m)
Deck Area78.0 sq m
Main Spans4
Year Built2012

Traffic

Avg Daily Traffic30 (2024)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number34681

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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