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FM over Stony Creek

Dickinson County, Iowa · rated Poor in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

FM over Stony Creek in Dickinson County, Iowa, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 0 (failed condition, out of service) on the 0-9 scale.
It was built in 1990, making it 35 years old at the 2025 inventory.
It carries about 315 vehicles a day (traffic count year 2021).
Its listed owner is the county highway agency.
It is one of 13 of the 83 inventoried bridges in Dickinson County rated poor (15.7%); 13 (15.7%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings

Component	Rating (2025)	FHWA scale meaning
Deck	0	Failed condition, out of service
Superstructure	0	Failed condition, out of service
Substructure	0	Failed condition, out of service

Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.

Bridge	Built	Vehicles/day	Condition
US 71 over E to W Okoboji Lkes Conn	1999	14,600	Good
Ia 9 over Inlet W Okoboji Lake	1971	8,500	Fair
US 71 & Ia 9 over East Okoboji Lake	1939	8,200	Fair
US 71 & Ia 9 over Dry Run Creek	1978	5,400	Good
Ia 9 over W Fork Little Sioux Rvr	1929	4,310	Poor
Ia 9 over Little Sioux River	1971	4,310	Good