 The rest of the road was paved by the Snohomish County government in 1916, completing a Stanwood–Arlington highway.The state government took over maintenance of the Stanwood–Camano highway in 1945, designating it as Secondary State Highway 1Y (SSH 1Y).SSH 1Y ran from Camano Island to East Stanwood, where it was briefly concurrent with SSH 1E, and continued to a junction with Primary State Highway 1 (PSH 1, also signed as U.S. Route 99).