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M27 (130TH Ave) over Stony Creek

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

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

M27 (130TH Ave) over Stony Creek in Dickinson County, Iowa, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
It was built in 2013, making it 12 years old at the 2025 inventory.
It carries about 1,008 vehicles a day (traffic count year 2021).
Its listed owner is the county highway agency.
It is one of 37 of the 83 inventoried bridges in Dickinson County rated good (44.6%); 13 (15.7%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings

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