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H28 146TH Blvd over Burr Oak Creek

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

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

H28 146TH Blvd over Burr Oak Creek in Jefferson 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 9 (excellent condition) on the 0-9 scale.
It was built in 2022, making it 3 years old at the 2025 inventory.
It carries about 100 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 70 of the 156 inventoried bridges in Jefferson County rated good (44.9%); 31 (19.9%) 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

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

Bridge	Built	Vehicles/day	Condition
US 34 EB over BNSF RR	2008	7,800	Good
US 34 WB over BNSF RR	2008	7,800	Good
US 34 over Mitchell Creek	2009	4,360	Good
Ia 1 over Crow Creek	1928	4,100	Fair
US 34 EB over Big Cedar Creek	2016	3,900	Fair
US 34 WB over Big Cedar Creek	2006	3,900	Good