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US 69 over Ioway Creek

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

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

US 69 over Ioway Creek in Story 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 1924 and reconstructed in 2006, making it 101 years old at the 2025 inventory.
It carries about 24,600 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 102 of the 302 inventoried bridges in Story County rated good (33.8%); 40 (13.2%) 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


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 211 ft
Location	0.6 mi. N of Jct. US 30
NBI structure number	000000000048680
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-35 over Ballard Creek	1964	48,300	Fair
I-35 over Walnut Creek	1964	48,300	Fair
I 35 over South Skunk Rvr Overflow	2017	48,300	Good
I-35 over Drainage Ditch	1967	28,300	Good
NB I-35 over Bike Path	1964	24,150	Fair
I 35 NB over South Skunk River	2018	24,150	Good