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US 34 EB over Old US 34

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

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

US 34 EB over Old US 34 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 7 (good condition) on the 0-9 scale.
It was built in 2007, making it 18 years old at the 2025 inventory.
It carries about 2,345 vehicles a day (traffic count year 2022).
Its listed owner is the state 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


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 230 ft
Location	3.9 mi. W of Jct. IA 1
NBI structure number	000000000609790
Condition class	Good

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