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FM over South West Creek

Clarke County, Iowa · rated Poor in the 2025 National Bridge Inventory

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

FM over South West Creek in Clarke County, Iowa, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 3 (serious condition) on the 0-9 scale.
It was built in 1960 and reconstructed in 1980, making it 65 years old at the 2025 inventory.
It carries about 141 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 54 of the 168 inventoried bridges in Clarke County rated poor (32.1%); 54 (32.1%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 57 ft
Location	072261503
NBI structure number	000000000114720
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
I-35 over Drainage Ditch	1957	18,600	Fair
I 35 SB over South West Creek	2013	9,550	Fair
I 35 SB over West Creek	2013	9,550	Good
NB I-35 over South West Creek	2012	9,400	Good
NB I-35 over West Creek	2012	9,400	Fair
SB I-35 over White Breast Creek	1969	8,850	Fair