Structure 1734 · Franklin County, MO

RT D S over Is 44

Carries RT D S over Is 44, S 8 T 40 N R 2 W.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating4/9 · Poor
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT197 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 4/9 · sets the ratingSubstructure 7/9

197 ft end to end, longest span 60 ft: about 3 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built1969rebuilt 2008
Length196.9 ft60 m
Daily traffic9,463counted 2024
Last inspectedOctober 2023every 24 months

Location

StateMissouri
CountyFranklin
LocationS 8 T 40 N R 2 W
CarriesRT D S
CrossesIs 44
Coordinates38.21191, -91.17218

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length196.9 ft (60 m)
Max Span60.0 ft (18.3 m)
Deck Width62.7 ft (19.1 m)
Deck Area1,146 sq m
Main Spans4
Year Built1969 (reconstructed 2008)

Traffic

Avg Daily Traffic9,463 (2024)
Truck Traffic8%
Lanes On Bridge4
Lanes Under Bridge4

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number1734

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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