Structure 6110 · Maries County, MO

Mo 42 E over Fly CR

Carries Mo 42 E over Fly CR, S 30 T 40 N R 9 W.

Overall conditionPoor

Set by its lowest-rated component: Deck at 3 of 9.

How ratings work
Decksets the rating3/9 · Serious
Superstructure5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT147 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 5/9Substructure 7/9

147 ft end to end, longest span 54 ft: about 2 semi-trucks nose to tail. 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 multi-beam bridge.

Built196264 years old
Length147.0 ft44.8 m
Daily traffic457counted 2024
Last inspectedAugust 2024every 24 months

Location

StateMissouri
CountyMaries
LocationS 30 T 40 N R 9 W
CarriesMo 42 E
CrossesFly CR
Coordinates38.18521, -91.96750

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length147.0 ft (44.8 m)
Max Span54.1 ft (16.5 m)
Deck Width26.6 ft (8.1 m)
Deck Area362.9 sq m
Main Spans3
Year Built1962

Traffic

Avg Daily Traffic457 (2024)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number6110

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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