It’s Throwback Thursday! 1915 - Mitchell Point Tunnel opened on the Columbia River Highway in Oregon. The tunnel closed in 1953 when a new two-lane water-level route along the river bypassed the old road. The tunnel was then leveled by explosives and machinery in 1966 to make room for a four-lane freeway configuration. Learn more about this tunnel: http://bit.ly/1G5kj5SFlickr gallery: http://bit.ly/1BQi6VG
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