Structure 33107 · St. Clair County, MO

Mo 13 N over Panther CR

Carries Mo 13 N over Panther CR, S 31 T 36 N R 24 W.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT123 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

123 ft end to end, longest span 60 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 box-beam bridge.

Built201016 years old
Length122.7 ft37.4 m
Daily traffic6,604counted 2024
Last inspectedSeptember 2024every 24 months

Location

StateMissouri
CountySt. Clair
LocationS 31 T 36 N R 24 W
CarriesMo 13 N
CrossesPanther CR
Coordinates37.84099, -93.61882

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Single/Spread
Total Length122.7 ft (37.4 m)
Max Span60.0 ft (18.3 m)
Deck Width40.0 ft (12.2 m)
Deck Area456.3 sq m
Main Spans3
Year Built2010

Traffic

Avg Daily Traffic6,604 (2024)
Truck Traffic27%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number33107

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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