Built in 1913, the Historic Columbia River Highway runs along the Oregon side of the 80-mile long, 4,000-foot deep Columbia River Gorge, from Troutdale east to The Dalles. Hwy 30, as it’s known, was replaced as a transportation corridor in the 1960s by Interstate 84, which gobbled up some of the historic route, but the sections that remain are either road tripable in a car or have been repurposed as pedestrian and bike paths. The plan is to eventually, by the early 2030s, restore the entire 73 miles of the Historic Columbia River Highway State Trail for recreational use.