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Minor Y-306 over Delaware River

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

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

Minor Y-306 over Delaware River in Jackson County, Kansas, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1966, making it 59 years old at the 2025 inventory.
It carries about 30 vehicles a day (traffic count year 2018).
Its listed owner is the county highway agency.
It is one of 139 of the 246 inventoried bridges in Jackson County rated fair (56.5%); 17 (6.9%) 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 steel stringer or multi-beam girder
Length	about 290 ft
Location	1.0E 0.5N of Whiting
NBI structure number	000431007003545
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US-75 Hwy over Banner Creek	1996	8,411	Good
US-75 Hwy over Elk Creek	1993	7,499	Good
US75 Hwy over Spring Creek	1986	6,206	Good
US-75 Hwy over Straight Creek	1993	6,206	Good
US-75 Hwy SB over South Cedar Creek	1996	4,206	Fair
Irr Indian -75 Hwy over Bills Creek	1996	4,206	Good