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RS 60 170th St. over Buttermilk Creek

Brown County, Kansas · rated Fair in the 2025 National Bridge Inventory

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

RS 60 170th St. over Buttermilk Creek in Brown County, Kansas, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1925, making it 100 years old at the 2025 inventory.
It carries about 230 vehicles a day (traffic count year 2016).
Its listed owner is the county highway agency.
It is one of 117 of the 256 inventoried bridges in Brown County rated fair (45.7%); 11 (4.3%) 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

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

Bridge	Built	Vehicles/day	Condition
US75 Hwy over Craig Creek Drainage	1956	5,099	Good
US-75 Hwy over Craig Creek Drainage	1995	5,099	Good
US-75 Hwy over Main Street	2003	4,709	Good
US-75 Hwy over Old K-246 Hwy UP RR	2003	4,709	Good
US75 Hwy over Delaware River Dr	1954	4,596	Good
US-75 Hwy over Plum Creek	1995	4,596	Good