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K4 Hwy over Rock Creek

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

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

K4 Hwy over Rock Creek in Jefferson 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 1961, making it 64 years old at the 2025 inventory.
It carries about 4,785 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 85 of the 194 inventoried bridges in Jefferson County rated fair (43.8%); 7 (3.6%) 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 172 ft
Location	1.34 Mi NE K245
NBI structure number	999900400440191
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
K4 Hwy over Little Muddy Creek	1964	7,418	Fair
K4 Hwy over Muddy Creek	1964	6,861	Good
U-24 Hwy over Delaware River	2024	4,211	Good
US24 Hwy over Little Muddy Creek	1958	3,966	Fair
US24 Hwy EB over Muddy Creek	1962	3,966	Fair
US24 Hwy WB over Muddy Creek	1979	3,966	Good