State Route 105 (SR 105) is a state highway in the U.S. state of Washington. It travels along the Pacific Coast between two junctions with U.S. Route 101 (US 101) in Raymond to the south and Aberdeen in the north. The highway also has two spur routes: a road serving the city of Westport on Grays Harbor and a short connector in Aberdeen. Route description SR 105 begins at an intersection with US 101 on the north bank of the Willapa River in Raymond, about north of the western terminus of SR 6. The highway follows Park Avenue through Raymond's northern residential neighborhoods and turns southwest to follow the Willapa River downstream and opposite from US 101. It turns northwest to follow the river as it approaches its mouth at the east end of Willapa Bay and passes Willapa Harbor Airport. SR 105 continues west along the Willapa Bay estuary, crossing over North River near the Smith Creek State Wildlife Recreation Area and following the foothills of the Willapa Hills. The highway continues west through the Shoalwater Bay Indian Reservation, located northwest of Tokeland and Dexter by the Sea, and turns north at North Cove on the Pacific Coast. The highway continues along the coast and passes through Grayland Beach State Park and the beachside community of Grayland in Grays Harbor County. It turns east at Cohassett Beach near Twin Harbors State Park while a spur route continues north to the city of Westport at the mouth of Grays Harbor. SR 105 travels east along the South Bay of Grays Harbor, crossing over the Elk River and the Johns River at Markham. The highway then passes through Ocosta and near the Stafford Creek Corrections Center before entering the city limits of Aberdeen. SR 105 turns north onto Boone Street near the Grays Harbor College campus and the Shoppes at Riverside shopping mall. The road expands to five lanes as it passes through the commercial and residential areas of southern Aberdeen and turns northwest after Marion Street, continuing for one block until reaching the terminus of SR 105 at a junction with US 101 on the southern bank of the Chehalis River. SR 105 is maintained by the Washington State Department of Transportation (WSDOT), which conducts an annual survey on state highways to measure traffic volume in terms of average annual daily traffic. The highway's daily vehicle counts in 2016 ranges