Junction of Interstate # 5 North to cities of Olympia, Tacoma, Seattle. South to cities of Centralia, Chehalis of Oregon / Washington border. White Pass Scenic Byway - Lewis and Clark Trail This scenic highway has numerous campgrounds both state and private. There are many lodging opportunities along the way. From the junction of Interstate 5 to Naches is called the White Pass Scenic Byway. At Kennewick the highway joins the Lewis and Clark Historic Trail. The mountainous areas have many roadside turnouts with viewpoints where photographers will enjoy the vistas that await them.