Structure 175620 · Hardin County, IA

Local over Iowa River (south Fork)

Carries Local over Iowa River (south Fork), 087210201.

Overall conditionPoor

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

How ratings work
Deck5/9 · Fair
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT104 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 4/9 · sets the ratingSubstructure 5/9

104 ft end to end, longest span 44 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.

Built195670 years old
Length104.0 ft31.7 m
Daily traffic29counted 2022
Last inspectedFebruary 2023every 24 months

Location

StateIowa
CountyHardin
Location087210201
CarriesLocal
CrossesIowa River (south Fork)
Coordinates42.38188, -93.26704

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length104.0 ft (31.7 m)
Max Span44.0 ft (13.4 m)
Deck Width22.3 ft (6.8 m)
Deck Area215.6 sq m
Main Spans3
Year Built1956

Traffic

Avg Daily Traffic29 (2022)
Truck Traffic28%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000175620

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.

Nearby Bridges