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290TH St over Dickenson Branch

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

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

290TH St over Dickenson Branch in Decatur County, Iowa, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 7 (good condition) on the 0-9 scale.
It was built in 2011, making it 14 years old at the 2025 inventory.
It carries about 5 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 37 of the 199 inventoried bridges in Decatur County rated good (18.6%); 78 (39.2%) 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	Steel stringer or multi-beam girder
Length	about 49 ft
Location	067260305
NBI structure number	000000000136361
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Rest Area Road over Rest Area Road	1994	13,800	Fair
SB I-35 over Grand River	1970	7,700	Fair
NB I-35 over Grand River	1970	7,550	Fair
SB I-35 over 310TH Street	1970	7,250	Fair
SB I-35 over Stream	1970	7,250	Good
NB I-35 over 310TH St	1970	7,100	Fair