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NB I-35 over Cc RR & 210TH St

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

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

NB I-35 over Cc RR & 210TH St in Hamilton 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 1972, making it 53 years old at the 2025 inventory.
It carries about 8,800 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 61 of the 165 inventoried bridges in Hamilton County rated good (37.0%); 32 (19.4%) 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 265 ft
Location	1.1 Mi N of SR D25
NBI structure number	000000000602550
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 Drainage Ditch	1966	27,200	Fair
I 35 over Stream	1965	26,900	Good
I-35 over Tuttle Creek	1967	17,400	Fair
I-35 over Drainage Ditch 23 & 31	1972	16,600	Good
I 35 NB over Ia 175	1966	11,850	Fair
I 35 SB over Ia 175	1966	11,850	Fair