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Ia 38 over Mosquito Creek

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

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

Ia 38 over Mosquito Creek 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 deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1972, making it 53 years old at the 2025 inventory.
It carries about 5,300 vehicles a day (traffic count year 2023).
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	Prestressed concrete stringer or multi-beam girder
Length	about 153 ft
Location	2.2 mi. S of Jct. U.S. 6
NBI structure number	000000000038161
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