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Ia 4 over Greenbrier Creek

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

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

Ia 4 over Greenbrier Creek in Greene 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 1993, making it 32 years old at the 2025 inventory.
It carries about 1,620 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 61 of the 168 inventoried bridges in Greene County rated good (36.3%); 25 (14.9%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 98 ft
Location	0.5 mi. S of jct. SR E63
NBI structure number	000000000025671
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Ia 4 (N Elm St) over UP RR & Mckinley St	2012	6,200	Good
US 30 over UP RR & 222ND	2017	4,970	Good
US 30 over West Beaver Creek	2017	4,970	Good
US 30 over Little Beaver Creek	2009	4,570	Good
US 30 over Hardin Creek	1957	4,230	Fair
US 30 over Buttrick Creek	1957	4,230	Fair