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FM Addison Ave over Wapsipinicon River

Howard County, Iowa · rated Fair in the 2025 National Bridge Inventory

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

FM Addison Ave over Wapsipinicon River in Howard County, Iowa, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1968, making it 57 years old at the 2025 inventory.
It carries about 285 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 76 of the 212 inventoried bridges in Howard County rated fair (35.8%); 41 (19.3%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings

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

Bridge	Built	Vehicles/day	Condition
US 63 over Crane Creek	1971	4,360	Fair
US 63 over W.br.turkey River	1993	3,930	Good
US 63 over Upper Iowa River	1982	3,860	Fair
US 63 over Turkey River	1971	3,830	Fair
Ia 9 over So Branch Turkey River	1974	3,440	Fair
US 63 over Stream	1993	3,360	Good