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Washington St over Iowa River

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

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

Washington St over Iowa River in Hardin County, Iowa, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1934, making it 91 years old at the 2025 inventory.
It carries about 6,251 vehicles a day (traffic count year 2022).
Its listed owner is a city or municipal highway agency.
It is one of 85 of the 241 inventoried bridges in Hardin County rated fair (35.3%); 69 (28.6%) 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


Structure	Continuous concrete deck arch
Length	about 379 ft
Location	000000000
NBI structure number	000000000027000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US 20 over Drainage	2003	9,800	Good
US 20 over Drainage	2003	9,200	Good
US 20 over Iowa River	2003	9,200	Good
US 65 over Iowa River	2011	7,800	Good
US 65 over Beaver Creek	1976	5,300	Good
US 20 EB over D 35 (elm St)	2003	4,900	Fair