The engineer for the highway was Samuel C. Lancaster (1864-1941). Lancaster was already established as a respected highway engineer when modern highway engineering was in its pioneer stage. Influenced by historic European roads, Lancaster emulated those styles in the Columbia River Gorge, while also designing and constructing a highway to advanced engineering standards. As construction moved east from Multnomah County, the newly-formed State Highway Department continued the work in Lancaster's spirit, after his direct participation ended. The early development of the highway contributed to the creation of the Oregon State Highway Commission (1913). The Columbia River Highway was a primary component of Oregon's initial state highway system which was adopted in 1914. When completed, the Columbia River Highway ran 196 miles, from Astoria to The Dalles. The Oregon Highway Commission called the highway "probably the most difficult and costly highway construction undertaken in America," and estimated its cost to be $11,000,000. In 1983 the Columbia River Highway Historic District was listed on the National Register of Historic Places, and in 1984 the highway was recognized as a National Historic Civil Engineering Landmark by the American Society of Civil Engineers. Introduction
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