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N Perth Rd over Slate Creek

Sumner County, Kansas · rated Good in the 2025 National Bridge Inventory

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

N Perth Rd over Slate Creek in Sumner County, Kansas, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 2006, making it 19 years old at the 2025 inventory.
It carries about 5 vehicles a day (traffic count year 2013).
Its listed owner is the county highway agency.
It is one of 331 of the 658 inventoried bridges in Sumner County rated good (50.3%); 16 (2.4%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 130 ft
Location	4.0W 3.0N of Wellington
NBI structure number	000960803006706
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-35 Hwy SB (kta) over K-53 Hwy	1956	12,849	Good
I-35 Hwy NB (kta) over K-53 Hwy	1956	12,849	Good
U-160 Hwy over Hargis Creek	2024	11,788	Good
I-35 Hwy SB (kta) over BNSF Railway	1956	11,227	Fair
I-35 Hwy NB (kta) over BNSF Railway	1956	11,227	Fair
I-35 Hwy SB (kta) over Ninnescah River	1956	11,227	Fair