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US-166 Highway over Neosho River

Labette County, Kansas · rated Good in the 2025 National Bridge Inventory

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

US-166 Highway over Neosho River in Labette County, Kansas, 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 2003, making it 22 years old at the 2025 inventory.
It carries about 2,247 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 133 of the 351 inventoried bridges in Labette County rated good (37.9%); 21 (6.0%) 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 813 ft
Location	.26 Mi E Ejct 59 Hwy
NBI structure number	999916600500851
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
US59 Hwy over UP Railroad	1937	9,620	Fair
US59 Hwy over Labette Creek	1937	7,842	Good
US-400 Hwy over Neosho River Drainage	1957	6,679	Good
US-400 Hwy over Drainage	2015	6,679	Good
US-400 Hwy over Neosho River Drainage	1987	5,746	Good
US-400 Hwy over Neosho River Drainage	1987	5,746	Good