Structure 7180 · Chariton County, MO

RT Jj S over Slater Br

Carries RT Jj S over Slater Br, S 21 T 56 N R 19 W.

Overall conditionGood

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

How ratings work
Deck9/9 · Excellent
Superstructure9/9 · Excellent
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT105 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 7/9 · sets the rating

105 ft end to end, longest span 34 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 multi-beam bridge.

Built1961rebuilt 2024
Length104.7 ft31.9 m
Daily traffic113counted 2024
Last inspectedDecember 2024every 24 months

Location

StateMissouri
CountyChariton
LocationS 21 T 56 N R 19 W
CarriesRT Jj S
CrossesSlater Br
Coordinates39.65282, -93.03557

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length104.7 ft (31.9 m)
Max Span34.1 ft (10.4 m)
Deck Width24.6 ft (7.5 m)
Deck Area239.2 sq m
Main Spans3
Year Built1961 (reconstructed 2024)

Traffic

Avg Daily Traffic113 (2024)
Truck Traffic19%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number7180

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.

Nearby Bridges