Structure 35812 · St. Charles County, MO

Wolfrum RD over Trib Dardenne CR

Carries Wolfrum RD over Trib Dardenne CR, S 1785 T 46 N R 3 E.

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
23 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 23 ft across with 2 openings. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.

Built200917 years old
Length22.6 ft6.9 m
Daily traffic5,000counted 2024
Last inspectedFebruary 2024every 24 months

Location

StateMissouri
CountySt. Charles
LocationS 1785 T 46 N R 3 E
CarriesWolfrum RD
CrossesTrib Dardenne CR
Coordinates38.72172, -90.64261

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length22.6 ft (6.9 m)
Max Span10.8 ft (3.3 m)
Deck Width61.0 ft (18.6 m)
Deck Area128.3 sq m
Main Spans2
Year Built2009

Traffic

Avg Daily Traffic5,000 (2024)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number35812

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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