Structure 24740 · Fayette County, IA

Ia 150 over Alexander Creek

Carries Ia 150 over Alexander Creek, 1.1 Mi. N Of Jct. Ia 187.

Overall conditionFair

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

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT32 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 32 ft across with 3 openings. 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, so those are drawn as typical for a culvert.

Built1959rebuilt 1969
Length32.2 ft9.8 m
Daily traffic2,660counted 2022
Last inspectedApril 2024every 24 months

Location

StateIowa
CountyFayette
Location1.1 Mi. N Of Jct. Ia 187
CarriesIa 150
CrossesAlexander Creek
Coordinates42.78997, -91.80489

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length32.2 ft (9.8 m)
Max Span9.8 ft (3 m)
Deck Area149.0 sq m
Main Spans3
Year Built1959 (reconstructed 1969)

Traffic

Avg Daily Traffic2,660 (2022)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000024740

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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