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NB I-35 over Cerro Gordo County Trail

Cerro Gordo County, Iowa · rated Fair in the 2025 National Bridge Inventory

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

NB I-35 over Cerro Gordo County Trail in Cerro Gordo County, Iowa, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1972, making it 53 years old at the 2025 inventory.
It carries about 9,000 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 135 of the 268 inventoried bridges in Cerro Gordo County rated fair (50.4%); 14 (5.2%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 179 ft
Location	0.7 mi. N of jct. SR B65
NBI structure number	000000000602210
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-35 over Calmus Creek	1970	21,400	Fair
Ia 122 over Cheslea Creek	2010	18,800	Good
I-35 over Drainage Ditch	1972	18,100	Good
I-35 over Drainage Ditch	1972	17,700	Fair
I-35 over Drainage Ditch	1971	17,600	Fair
I 35 over Drainage Ditch	1972	17,600	Fair