U.S. Route 101
U.S. Route 101, or U.S. Highway 101 (US 101) is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Road) where its route along the southern and central California coast approximates the old trail which linked the Spanish missions, pueblos, and presidios. It merges at some points with California State Route 1 (SR 1).
U.S. Route 101 in Washington
From Ilwaco, US 101 travels northwest into Seaview, where it intersects SR 103 at the foot of Long Beach and turns east onto 40th Street. The highway intersects the north end of the alternate route and crosses northeast over the Bear River and enters the Willapa National Wildlife Refuge. US 101 continues north along the east side of Willapa Bay and crosses the Naselle River before turning east towards Johnston's Landing, where SR 4 terminates.