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Duffy Road over Sulpher Creek Wasteway

Yakima County, Washington · rated Fair in the 2025 National Bridge Inventory

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

Duffy Road over Sulpher Creek Wasteway in Yakima County, Washington, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1970, making it 55 years old at the 2025 inventory.
It carries about 141 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 203 of the 557 inventoried bridges in Yakima County rated fair (36.4%); 31 (5.6%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 80 ft
Location	00.11 NW SR 241
NBI structure number	081394000000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Terrace Heights Dr over 18TH Street	1979	28,500	Fair
I-82 over Beech St	1962	25,909	Good
I-82 over Beech St	1962	25,909	Good
I-82 over Overflow Channel	1960	25,406	Fair
I-82 over Overflow Channel	1960	25,406	Fair
I-82 over Np Ry Moxee	1961	25,406	Poor