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6TH St. over Cedar River

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

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

6TH St. over Cedar River in Black Hawk 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 1984, making it 41 years old at the 2025 inventory.
It carries about 5,195 vehicles a day (traffic count year 2022).
Its listed owner is a city or municipal highway agency.
It is one of 210 of the 489 inventoried bridges in Black Hawk County rated fair (42.9%); 25 (5.1%) 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 girder and floorbeam
Length	about 703 ft
Location	City Bridge No. 43
NBI structure number	000000000503855
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US 218 over Quarry Lake & Wyth Rd	1989	29,000	Fair
US 218 over Broadway St	1989	23,100	Fair
US 218 over Airport Blvd	1989	23,100	Fair
US 218 over Cedar Rvr & Trail	1989	21,500	Fair
Ia 27 over Br Dry Run Creek	1993	20,900	Good
I 380 NB over Ianr RR Tx St Cedar Rvr	1983	19,950	Fair