Structure 261650 · O'Brien County, IA

FM over Waterman Creek

Carries FM over Waterman Creek, 097400102.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
22 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 22 ft across with 2 openings. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built1965rebuilt 1995
Length22.0 ft6.7 m
Daily traffic309counted 2022
Last inspectedJune 2024every 24 months

Location

StateIowa
CountyO'Brien
Location097400102
CarriesFM
CrossesWaterman Creek
Coordinates43.24699, -95.52548

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length22.0 ft (6.7 m)
Max Span11.2 ft (3.4 m)
Deck Area65.7 sq m
Main Spans2
Year Built1965 (reconstructed 1995)

Traffic

Avg Daily Traffic309 (2022)
Truck Traffic30%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number000000000261650

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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