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FM over S Fork Clanton Creek

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

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

FM over S Fork Clanton Creek in Madison 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 1977, making it 48 years old at the 2025 inventory.
It carries about 89 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 105 of the 225 inventoried bridges in Madison County rated fair (46.7%); 82 (36.4%) 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	Continuous prestressed concrete stringer or multi-beam girder
Length	about 139 ft
Location	074271506
NBI structure number	000000000231991
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-80 over Drainage Ditch	1959	27,600	Fair
US 169 over Cedar Creek	1990	5,900	Good
US 169 over North River	1969	4,280	Fair
US 169 over N Branch North River	1983	4,280	Fair
US 169 over Stream	1944	4,280	Fair
FM over Middle River	1996	2,091	Fair