Home › Washington › Yakima County › Slayton Rd. over Marion Drain

Slayton Rd. over Marion Drain

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

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

Slayton Rd. over Marion Drain in Yakima County, Washington, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 3 (serious condition) on the 0-9 scale.
It was built in 1960, making it 65 years old at the 2025 inventory.
It carries about 40 vehicles a day (traffic count year 2019).
Its listed owner is the county highway agency.
It is one of 31 of the 557 inventoried bridges in Yakima County rated poor (5.6%); 31 (5.6%) 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	Timber stringer or multi-beam girder
Length	about 62 ft
Location	00.56 S Chambers Rd
NBI structure number	083338000000000
Condition class	Poor

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