Washington State Route 525
State Route 525 (SR 525) is a 30.68-mile-long (49.37 km) state highway located in Snohomish and Island counties in the western region of the U.S. state of Washington. SR 525 begins at an interchange with Interstate 5 (I-5) and I-405 in Lynnwood and travels north to SR 99 as a four-lane controlled-access freeway. From Lynnwood, the highway serves Mukilteo and becomes the terminus of SR 526 before taking its ferry route to Clinton on Whidbey Island. SR 525 traverses the island's interior as part of the Whidbey Island Scenic Byway before the designation ends at an intersection with SR 20 south of Coupeville.
SR 525 and its holding lanes at the former Mukilteo ferry terminal
The Swamp Creek Interchange in Lynnwood, the southern terminus of SR 525 and the northern terminus of I-405, viewed from above in 1967. The overpass in the distance is 164th St. SW, where SR 525 was designated at that time.
Snohomish County, Washington
Snohomish County is a county located in the U.S. state of Washington. With a population of 827,957 as of the 2020 census, it is the third-most populous county in Washington, after nearby King and Pierce counties, and the 72nd-most populous in the United States. The county seat and largest city is Everett. The county forms part of the Seattle metropolitan area, which also includes King and Pierce counties to the south.
Aerial view of the Snohomish River delta, including portions of Everett, Lake Stevens, and Marysville
Canoes with settlers and Native Americans at Mukilteo Beach, c. 1861–62
Snoqualmie Hall, a building shared by Edmonds College and Central Washington University, 2007