Structure 29318 · Iron County, MO

Adam Creek RD over Abbott CR

Carries Adam Creek RD over Abbott CR, S 28 T 35 N R 1 W.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT41 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 5/9

41 ft end to end, longest span 17 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 multi-beam bridge.

Built199828 years old
Length41.3 ft12.6 m
Daily traffic50counted 2023
Last inspectedFebruary 2025every 24 months

Location

StateMissouri
CountyIron
LocationS 28 T 35 N R 1 W
CarriesAdam Creek RD
CrossesAbbott CR
Coordinates37.71300, -91.04740

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length41.3 ft (12.6 m)
Max Span17.4 ft (5.3 m)
Deck Width20.0 ft (6.1 m)
Deck Area76.9 sq m
Main Spans2
Year Built1998

Traffic

Avg Daily Traffic50 (2023)
Truck Traffic10%
Lanes On Bridge1

Inspection & Ownership

Last InspectionFebruary 2025
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure Number29318

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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