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US 65 over Otter Creek

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

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

US 65 over Otter Creek in Warren County, Iowa, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1958, making it 67 years old at the 2025 inventory.
It carries about 2,380 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 88 of the 238 inventoried bridges in Warren County rated fair (37.0%); 48 (20.2%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 208 ft
Location	1.6 Mi. S of Jct. SR G-58
NBI structure number	000000000050880
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-35 over Drainage Ditch	1957	24,700	Good
I 35 over Broad Horn Creek	1957	21,000	Fair
I-35 over Drainage Ditch	1958	21,000	Fair
Ia 28 over South Middle Creek	1984	18,500	Good
I 35 SB over North River	2014	12,550	Good
I 35 SB over Badger Creek	2014	12,550	Good