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T-50 Parallel Rd over Tonganoxie Creek

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

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

T-50 Parallel Rd over Tonganoxie Creek in Leavenworth County, Kansas, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
It was built in 1967, making it 58 years old at the 2025 inventory.
It carries about 490 vehicles a day (traffic count year 2024).
Its listed owner is the county highway agency.
It is one of 9 of the 237 inventoried bridges in Leavenworth County rated poor (3.8%); 9 (3.8%) 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 concrete tee beam
Length	about 94 ft
Location	1.5N of Tonganoxie
NBI structure number	000521059904200
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
US-73 Hwy over Seven Mile Creek	2006	27,473	Good
US73 Hwy over Five Mile Creek	1983	20,979	Good
I-70 Hwy EB (kta) over Mud Creek	1956	17,657	Good
I-70 Hwy WB (kta) over Mud Creek	1956	17,657	Good
I-70 Hwy EB (kta) over Ninemile Creek	1956	17,657	Good
I-70 Hwy WB (kta) over Ninemile Creek	1956	17,657	Fair