Washington State Route 526
State Route 526 (SR 526), also known as the Boeing Freeway, is a state highway in Snohomish County, Washington, United States. The east–west highway travels 4.52 miles (7.27 km) and connects SR 525 in Mukilteo to Interstate 5 (I-5) in southern Everett. The highway serves the Boeing Everett Factory and Paine Field; it also serves as a main route to the city of Mukilteo and the state-run ferry to Whidbey Island.
State Route 526 | ||||
|---|---|---|---|---|
| Boeing Freeway | ||||
A map of Snohomish County with SR 526 highlighted in red | ||||
| Route information | ||||
| Auxiliary route of I-5 | ||||
| Maintained by WSDOT | ||||
| Length | 4.52 mi (7.27 km) | |||
| Existed | 1964–present | |||
| Tourist routes | Cascade Loop Scenic Byway | |||
| Major junctions | ||||
| West end | SR 525 in Mukilteo | |||
| East end | I-5 / SR 99 / SR 527 in Everett | |||
| Location | ||||
| Country | United States | |||
| State | Washington | |||
| County | Snohomish | |||
| Highway system | ||||
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SR 526 was established during the 1964 state highway renumbering as the successor to Secondary State Highway 1I (SSH 1I) between Mukilteo and Everett. Its original route followed a wagon road traveling along Possession Sound that opened in 1914; it was moved onto its current route in 1967 after Boeing announced its intention to build a factory in Everett for its 747 airliner.