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NE Old Cascade Hwy over Tye River

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

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

NE Old Cascade Hwy over Tye River in King County, Washington, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory 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 2023).
Its listed owner is the county highway agency.
It is one of 607 of the 1,252 inventoried bridges in King County rated fair (48.5%); 50 (4.0%) 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	Steel stringer or multi-beam girder
Length	about 61 ft
Location	0.1 Mi S of SR-2
NBI structure number	083886000000000
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-90 EB over Sunset Creek	2024	139,482	Good
I-90 WB over Sunset Creek	2024	139,482	Good
N Queen Anne Dr over Ravine	1935	125,000	Fair
I-5 over Terrain	1966	122,487	Fair
SW Spokane St over Duwamish River W Waterwy	1983	108,179	Fair
I-5 over Terrain	1966	106,282	Fair