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WB US 34 over West Nodaway River

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

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

WB US 34 over West Nodaway River in Montgomery 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 1970, making it 55 years old at the 2025 inventory.
It carries about 1,325 vehicles a day (traffic count year 2021).
Its listed owner is the state highway agency.
It is one of 113 of the 209 inventoried bridges in Montgomery County rated fair (54.1%); 52 (24.9%) 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 steel stringer or multi-beam girder
Length	about 274 ft
Location	0.3 Mi. W of Jct. US 71
NBI structure number	000000000037573
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Ia 48 over Stream	1931	7,600	Fair
US 34 over East Nishnabotna River	1964	4,460	Fair
Ia 48 over Red Oak Creek	1918	4,460	Fair
US 34 over Indian Creek	1964	4,030	Fair
US 34 over Crabapple Creek	1964	4,030	Fair
US 34 over West Tarkio Creek	1964	3,990	Fair