Structure 37011 · St. Louis County, MO

James S Mcdonnell over Coldwater Crk

Carries James S Mcdonnell over Coldwater Crk, S 5 T 46 N R 6 E.

Overall conditionGood

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

How ratings work
Decksets the rating9/9 · Excellent
Superstructuresets the rating9/9 · Excellent
Substructuresets the rating9/9 · Excellent
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT132 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 9/9

132 ft end to end, longest span 64 ft. 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
Length131.9 ft40.2 m
Daily traffic10,699counted 2023
Last inspectedMay 2023every 24 months

Location

StateMissouri
CountySt. Louis
LocationS 5 T 46 N R 6 E
CarriesJames S Mcdonnell
CrossesColdwater Crk
Coordinates38.75999, -90.36078

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignTee Beam
Total Length131.9 ft (40.2 m)
Max Span64.0 ft (19.5 m)
Deck Width58.7 ft (17.9 m)
Deck Area719.6 sq m
Main Spans2
Year Built2023

Traffic

Avg Daily Traffic10,699 (2023)
Truck Traffic10%
Lanes On Bridge4

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number37011

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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