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Loc 470TH St over Union Slough Ditch

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

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

Loc 470TH St over Union Slough Ditch in Kossuth 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 7 (good condition) on the 0-9 scale.
It was built in 1981, making it 44 years old at the 2025 inventory.
It carries about 21 vehicles a day (traffic count year 2021).
Its listed owner is the county highway agency.
It is one of 123 of the 266 inventoried bridges in Kossuth County rated good (46.2%); 40 (15.0%) 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 169 over E Fork Des Moines River	2008	7,500	Good
US 18 over E Fork Des Moines River	1984	5,900	Good
US 18 over Drainage Ditch	1993	4,660	Good
US 169 over E Fork Des Moines River	1971	3,460	Fair
US 169 over Drainage Ditch	1985	2,880	Good
US 169 over E Fork Des Moines River	1971	2,880	Fair