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Channel Road over Cayou Valley Lagoon

San Juan County, Washington · rated Good in the 2025 National Bridge Inventory

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

Channel Road over Cayou Valley Lagoon in San Juan County, Washington, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
It was built in 2016, making it 9 years old at the 2025 inventory.
It carries about 516 vehicles a day (traffic count year 2024).
Its listed owner is the county highway agency.
It is one of 4 of the 13 inventoried bridges in San Juan County rated good (30.8%); 0 (0.0%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 80 ft
Location	Orcas Island
NBI structure number	088924000000000
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
SR 20 Extension over Friday Hbr-san Juan Chan	1968	2,587	Fair
SR 20 Extension over Friday Hbr-san Juan Chan	2005	2,587	Good
SR 20 over Harney Channel	1959	2,322	Good
SR 20 over Harney Channel	1979	2,150	Fair
Deer Harbor Road over Crow Valley Drainage	2001	1,826	Fair
Orcas to Olga road over Cascade Creek	1921	1,607	Fair