Structure 37029 · Cass County, MO

275th ST W over Is 49

Carries 275th ST W over Is 49, S 16 T 44 N R 31 W.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating7/9 · Good
Substructure9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT210 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 9/9

210 ft end to end, longest span 103 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 tee-beam bridge.

Built20233 years old
Length209.6 ft63.9 m
Daily traffic218counted 2024
Last inspectedJune 2024every 24 months

Location

StateMissouri
CountyCass
LocationS 16 T 44 N R 31 W
Carries275th ST W
CrossesIs 49
Coordinates38.61734, -94.34843

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length209.6 ft (63.9 m)
Max Span103.0 ft (31.4 m)
Deck Width28.5 ft (8.7 m)
Deck Area555.9 sq m
Main Spans2
Year Built2023

Traffic

Avg Daily Traffic218 (2024)
Truck Traffic17%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number37029

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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