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I–84 is the main east–west route into the Columbia River Gorge. U.S. 26, heading east from Portland and northwest from Prineville, is the main route into the Mt. Hood area. Portions of I–84 and U.S. 26 that pass through the mountains pose winter-travel difficulties, though the state plows these roadways regularly. The gorge is closed frequently during harsh winters due to ice and mud slides. Extreme winds can also make driving hazardous, and potentially result in highway closures.
The Historic Columbia River Highway (U.S. 30) from Troutdale to just east of Oneonta Gorge passes Crown Point State Park and Multnomah Falls. I–84/U.S. 30 continues on to the Dalles. Highway 35 heads south from the Dalles to the Mt. Hood area, intersecting with U.S. 26 at Government Camp. From Portland, the Columbia Gorge–Mt. Hood Scenic Loop is the easiest way to see the gorge and the mountain. Take I–84 east to Troutdale and follow U.S. 26 to Bennett Pass (near Timberline), where Highway 35 heads north to Hood River; then follow I–84 back to Portland. Or make the loop in reverse.
Major rental-car agencies are available in Gresham (3 miles west of Troutdale); Enterprise is also in Hood River and the Dalles.