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FM over North Timber Creek

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

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

FM over North Timber Creek in Marshall 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 1984, making it 41 years old at the 2025 inventory.
It carries about 49 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 73 of the 303 inventoried bridges in Marshall County rated fair (24.1%); 130 (42.9%) 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

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

Bridge	Built	Vehicles/day	Condition
US 30 over Davisons Creek	1954	14,700	Fair
Ia 14 over Linn Creek	1985	13,300	Good
Ia 14 over UP RR Madison&market St	1985	13,300	Fair
So. 6TH St. over Linn Creek	1984	11,300	Fair
So Center St over Linn Creek	1951	10,448	Poor
So Center St over RR and Madison St	1951	9,491	Poor