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310 Ave (south) over Trib. to Saline River

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

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

310 Ave (south) over Trib. to Saline River in Graham County, Kansas, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1955, making it 70 years old at the 2025 inventory.
It carries about 40 vehicles a day (traffic count year 2020).
Its listed owner is the county highway agency.
It is one of 10 of the 142 inventoried bridges in Graham County rated poor (7.0%); 10 (7.0%) 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 stringer or multi-beam girder
Length	about 41 ft
Location	3.5E 12.1S of Hill City
NBI structure number	000330559004121
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
US283 Hwy over S Fk Solomon R Drainage	1936	1,790	Good
US24 Hwy over S Fk Solomon R Drainage	1933	1,453	Good
US24 Hwy over S Fk Solomon R Drainage	1963	1,453	Good
US24 Hwy over S Fk Solomon R Drainage	1933	1,453	Good
US283 Hwy over South Fork Solomon River	1963	1,418	Good
US283 Hwy over Saline R Drainage	1967	1,324	Fair