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US160 Hwy over Walnut River

Cowley County, Kansas · rated Poor in the 2025 National Bridge Inventory

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

US160 Hwy over Walnut River in Cowley County, Kansas, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1957, making it 68 years old at the 2025 inventory.
It carries about 5,075 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 18 of the 340 inventoried bridges in Cowley County rated poor (5.3%); 18 (5.3%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Continuous steel girder and floorbeam
Length	about 612 ft
Location	8.30 Mi E Sumner Coln
NBI structure number	999916000180241
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
Summit Street N. over C Street Canal	1928	15,675	Fair
US-77 Hwy over "c" Street Canal	1997	6,234	Good
US-77 Hwy over North Creek	1997	6,234	Good
US-77 Hwy over North Creek Tributary	1998	6,234	Good
US-77 Hwy over BNSF Railroad	1998	6,234	Good
US-77 Hwy over North Creek Tributary	1998	6,234	Good