Structure 15227 · Putnam County, MO

120th ST over Branch

Carries 120th ST over Branch, S 28 T 67 N R 20 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 FT45 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

45 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.

Built199234 years old
Length44.9 ft13.7 m
Daily traffic20counted 2024
Last inspectedFebruary 2023every 24 months

Location

StateMissouri
CountyPutnam
LocationS 28 T 67 N R 20 W
Carries120th ST
CrossesBranch
Coordinates40.57300, -93.14943

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length44.9 ft (13.7 m)
Max Span44.0 ft (13.4 m)
Deck Width16.1 ft (4.9 m)
Deck Area67.1 sq m
Main Spans1
Year Built1992

Traffic

Avg Daily Traffic20 (2024)
Truck Traffic10%
Lanes On Bridge1

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number15227

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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