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US 6 over Cedar River

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

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

US 6 over Cedar River in Muscatine County, Iowa, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1972, making it 53 years old at the 2025 inventory.
It carries about 1,770 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 62 of the 144 inventoried bridges in Muscatine County rated fair (43.1%); 30 (20.8%) 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 steel stringer or multi-beam girder
Length	about 1,036 ft
Location	3.6 Mi. W of Jct. Iowa 38
NBI structure number	000000000037861
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US 61 & Ia 22 over Mad Creek	1984	18,300	Good
US 61 over Hershey Ave	2008	12,100	Good
Isett Ave over Geneva Creek	1980	11,716	Fair
E 2ND St over Mad Creek	1963	8,700	Fair
Ia 38 over Mad Creek	1972	8,200	Fair
Washngton St. over Mad Creek	1986	7,906	Fair