Structure 245281 · Mills County, IA

Lcl-pathfield over Waubonsie CR

Carries Lcl-pathfield over Waubonsie CR, 071421803.

Overall conditionPoor

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

How ratings work
Deck6/9 · Satisfactory
Superstructure5/9 · Fair
Substructuresets the rating3/9 · Serious
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT121 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9Substructure 3/9 · sets the rating

121 ft end to end, longest span 80 ft. 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 through truss.

Built194086 years old
Length121.1 ft36.9 m
Daily traffic20counted 2021
Last inspectedMarch 2023every 24 months

Location

StateIowa
CountyMills
Location071421803
CarriesLcl-pathfield
CrossesWaubonsie CR
Coordinates40.94536, -95.71922

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length121.1 ft (36.9 m)
Max Span80.1 ft (24.4 m)
Deck Width18.4 ft (5.6 m)
Deck Area206.6 sq m
Main Spans2
Year Built1940

Traffic

Avg Daily Traffic20 (2021)
Lanes On Bridge1

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical3 — Scour critical
Structure Number000000000245281

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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