Structure 5124 · Audrain County, MO

Mo 22 E over Davis Fk Salt Rvr

Carries Mo 22 E over Davis Fk Salt Rvr, S 21 T 51 N R 9 W.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT170 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 6/9

170 ft end to end, longest span 40 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 tee-beam bridge.

Built1928rebuilt 2008
Length169.9 ft51.8 m
Daily traffic3,844counted 2024
Last inspectedOctober 2023every 24 months

Location

StateMissouri
CountyAudrain
LocationS 21 T 51 N R 9 W
CarriesMo 22 E
CrossesDavis Fk Salt Rvr
Coordinates39.18249, -91.91815

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length169.9 ft (51.8 m)
Max Span40.0 ft (12.2 m)
Deck Width30.5 ft (9.3 m)
Deck Area481.7 sq m
Main Spans4
Year Built1928 (reconstructed 2008)

Traffic

Avg Daily Traffic3,844 (2024)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number5124

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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