US 71 & Ia 9 over East Okoboji Lake

Fair Condition87 years old8,200 vehicles/day

Location

StateIowa
CountyDickinson
Location1.7 Mi. N Of S Jct. Ia 9
CarriesUS 71 & Ia 9
CrossesEast Okoboji Lake
Coordinates43.42422, -95.09379

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure7 (Good)
Substructure7 (Good)
Channel/Waterway8 (Very Good)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length64.0 ft (19.5 m)
Max Span39.0 ft (11.9 m)
Deck Width78.1 ft (23.8 m)
Deck Area464.1 sq m
Main Spans1
Year Built1939 (reconstructed 1979)

Traffic

Avg Daily Traffic8,200 (2022)
Truck Traffic7%
Lanes On Bridge4

Inspection & Ownership

Last Inspection223
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number000000000023680

Nearby Bridges