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SR G28 over Ia 163

Marion County, Iowa · rated Good in the 2025 National Bridge Inventory

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

SR G28 over Ia 163 in Marion County, Iowa, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1994, making it 31 years old at the 2025 inventory.
It carries about 10,500 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 82 of the 217 inventoried bridges in Marion County rated good (37.8%); 28 (12.9%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Continuous steel stringer or multi-beam girder
Length	about 270 ft
Location	At Jct SR G28/Wash. St.
NBI structure number	000000000601455
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Clark St over Ia 163	1994	6,400	Fair
Idaho Dr over Ia 163	1994	5,322	Good
SB Ia 5 & EB 92 over White Breast Creek	1965	4,200	Fair
NB Ia 5 & WB 92 over White Breast Creek	1978	4,200	Fair
Ia 92 EB & Ia 5 SB over 135TH Place	1978	3,950	Good
Ia 92 WB & Ia 5 NB over 135TH Place	1978	3,950	Good