Structure 23460 · Des Moines County, IA

Local Road over Brush Creek

Carries Local Road over Brush Creek, 069033505.

Overall conditionPoor

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

How ratings work
Decksets the rating3/9 · Serious
Superstructure4/9 · Poor
Substructure4/9 · Poor
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT80 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 4/9Substructure 4/9

80 ft end to end, longest span 40 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 girder bridge.

Built1927rebuilt 1957
Length80.1 ft24.4 m
Daily traffic393counted 2022
Last inspectedSeptember 2024every 12 months

Location

StateIowa
CountyDes Moines
Location069033505
CarriesLocal Road
CrossesBrush Creek
Coordinates40.73366, -91.17065

Physical Characteristics

MaterialSteel Continuous
DesignGirder and Floorbeam
Total Length80.1 ft (24.4 m)
Max Span40.0 ft (12.2 m)
Deck Width33.8 ft (10.3 m)
Deck Area251.3 sq m
Main Spans2
Year Built1927 (reconstructed 1957)

Traffic

Avg Daily Traffic393 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number000000000023460

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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