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H20 140TH St over Seven Mile Creek

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

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

H20 140TH St over Seven Mile Creek in Montgomery 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 29 vehicles a day (traffic count year 2021).
Its listed owner is the county highway agency.
It is one of 44 of the 209 inventoried bridges in Montgomery County rated good (21.1%); 52 (24.9%) 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 179 ft
Location	073362901
NBI structure number	000000000256161
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Ia 48 over Stream	1931	7,600	Fair
US 34 over East Nishnabotna River	1964	4,460	Fair
Ia 48 over Red Oak Creek	1918	4,460	Fair
US 34 over Indian Creek	1964	4,030	Fair
US 34 over Crabapple Creek	1964	4,030	Fair
US 34 over West Tarkio Creek	1964	3,990	Fair