U.S. Route 101
The nearly highway's northern terminus is in Tumwater, Washington: the route remains along the Olympic Peninsula's coastal perimeter west, north, and east; the northernmost point on the highway is in Port Angeles. The southern terminus of US 101 is in Los Angeles at the East Los Angeles Interchange, the world's busiest freeway interchange.
Eureka, California
U.S. Route 101 is the major north and south highway, which connects Eureka to the rest of the North Coast region. The highway connects to Oregon, located approximately to the north, and San Francisco, over to the south. The highway follows city streets through the city, with flow and cross-traffic controlled by traffic signals. Highway 101 enters Eureka from the south as Broadway. As it reaches the downtown area, it splits into a one-way couplet composed of 4th Street and 5th Street. On the north side of the city, northbound and southbound rejoin at the northeast side before the highway becomes a restricted (safety corridor) expressway (to Arcata and points beyond) as double bridges cross the Eureka Slough (mouth of the Freshwater Creek).