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SW 170th 634-11 over Little Walnut River

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

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

SW 170th 634-11 over Little Walnut River in Butler County, Kansas, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1955 and reconstructed in 2015, making it 70 years old at the 2025 inventory.
It carries about 200 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 201 of the 591 inventoried bridges in Butler County rated fair (34.0%); 38 (6.4%) 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 concrete tee beam
Length	about 344 ft
Location	1.0S 1.5E of Gordon
NBI structure number	000000000081050
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US77 Hwy over W Br Walnut Riv/ped Pass	1935	13,087	Good
54/400 Hwy Eb/wb over Republican Creek	1955	10,250	Good
W Central Ave over Lakeside Drainage	1998	9,925	Good
US54/US400 Hwy WB over Dry Creek	1955	9,799	Good
US54/US400 Hwy EB over Dry Creek	1960	9,799	Good
US54/US400 Hwy WB over Whitewater River	1955	9,799	Fair