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Local over Big Cedar CR Dd 181

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

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

Local over Big Cedar CR Dd 181 in Calhoun County, Iowa, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 0 (failed condition, out of service) on the 0-9 scale.
It was built in 1900 and reconstructed in 1960, making it 125 years old at the 2025 inventory.
It carries about 15 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 49 of the 198 inventoried bridges in Calhoun County rated poor (24.7%); 49 (24.7%) 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

Component	Rating (2025)	FHWA scale meaning
Deck	0	Failed condition, out of service
Superstructure	0	Failed condition, out of service
Substructure	0	Failed condition, out of service

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

Bridge	Built	Vehicles/day	Condition
US 20 over East Cedar Creek	2008	7,000	Good
US 20 over Dd 9 & 13	2008	6,900	Good
US 20 over W Fork Camp Creek	2010	5,900	Good
US 20 over Drainage Ditch No 1 & 54	2010	5,900	Good
US 20 WB over Cc RR	2011	3,450	Good
US 20 EB over Cc RR	2010	3,450	Good