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.
U.S. Route 101 in Washington
Following the dangerous Morse Creek S-Curves is a Rest Area and viewpoint at the Deer Park Loop interchange. The road then becomes a divided expressway until it reaches Carlsborg and crosses the Dungeness River. It enters the town of Sequim and turns into a super-two expressway, bypassing the town. East of Sequim, the road turns back into a standard two-lane road and goes to Sequim Bay and then Discovery Bay, where it intersects SR 20 and turns south. After a short distance, US 101 intersects the western end of SR 104. The road then turns south to the town of Quilcene. Exiting Quilcene, the road heads southwest into Olympic National Forest and crosses a pass between Mount Walker and Buck Mountain, after which it proceeds sharply downhill southeast towards Dabob Bay, where it continues following the shore and reaches Hood Canal.