Structure 36305 · Gasconade County, MO

Mint Spring RD over Trib Bourbeuse Rvr

Carries Mint Spring RD over Trib Bourbeuse Rvr, S 13 T 40 N R 6 W.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructure9/9 · Excellent
Substructuresets the rating8/9 · Very Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT26 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9 · sets the ratingSuperstructure 9/9Substructure 8/9 · sets the rating

26 ft end to end, longest span 12 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.

Built20188 years old
Length25.9 ft7.9 m
Daily traffic40counted 2024
Last inspectedMarch 2024every 24 months

Location

StateMissouri
CountyGasconade
LocationS 13 T 40 N R 6 W
CarriesMint Spring RD
CrossesTrib Bourbeuse Rvr
Coordinates38.20393, -91.53701

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length25.9 ft (7.9 m)
Max Span12.1 ft (3.7 m)
Deck Width24.0 ft (7.3 m)
Deck Area57.7 sq m
Main Spans2
Year Built2018

Traffic

Avg Daily Traffic40 (2024)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number36305

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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