Structure 29664 · St. Charles County, MO

Belleau CR RD over Belleau CR

Carries Belleau CR RD over Belleau CR, S 1776 T 47 N R 3 E.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT118 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

118 ft end to end, longest span 43 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 tee-beam bridge.

Built1987rebuilt 2001
Length118.4 ft36.1 m
Daily traffic5,000counted 2024
Last inspectedFebruary 2024every 24 months

Location

StateMissouri
CountySt. Charles
LocationS 1776 T 47 N R 3 E
CarriesBelleau CR RD
CrossesBelleau CR
Coordinates38.79900, -90.67515

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignTee Beam
Total Length118.4 ft (36.1 m)
Max Span43.0 ft (13.1 m)
Deck Width62.0 ft (18.9 m)
Deck Area682.3 sq m
Main Spans3
Year Built1987 (reconstructed 2001)

Traffic

Avg Daily Traffic5,000 (2024)
Truck Traffic5%
Lanes On Bridge4

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number29664

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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