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150th over Little Rock Creek

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

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

150th over Little Rock Creek in Jefferson 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 1977, making it 48 years old at the 2025 inventory.
It carries about 15 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 7 of the 194 inventoried bridges in Jefferson County rated poor (3.6%); 7 (3.6%) 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	Steel stringer or multi-beam girder
Length	about 28 ft
Location	1.0S 4.4E of Valley Fall
NBI structure number	000441029403940
Condition class	Poor

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
K4 Hwy over Rock Creek	1961	4,785	Fair
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