S70 Balsam Ave over Rock Creek

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

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

• S70 Balsam Ave over Rock Creek in Mitchell 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 354 vehicles a day (traffic count year 2022).
• Its listed owner is the county highway agency.
• It is one of 81 of the 167 inventoried bridges in Mitchell County rated good (48.5%); 16 (9.6%) are rated poor.
• Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
• Its condition class and component ratings are unchanged from the 2024 inventory.
• Its most recent inspection on record is dated December 2023, on a 24-month routine inspection cycle.
• 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.

View this bridge on a map → (43.3275, -93.00453)

Component ratings

Bridge details

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

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