Road or highway · United States

How much did Historic Columbia River Highway cost to build?

The Historic Columbia River Highway, called the Columbia River Scenic Highway, is the 73.8-mile (about 119 km) scenic road through the Columbia River Gorge in Oregon from Troutdale near Portland east to The Dalles, designed by the engineer Samuel Lancaster and built from 1913 to 1922 as the first paved highway in the Pacific Northwest, now a National Historic Civil Engineering Landmark. The American Society of Civil Engineers says the Oregon Highway Commission estimated its total cost at 11 million dollars, and Wikipedia reports that the state highway department put construction costs to 1922 at about 11 million, of which the state paid 7.6 million.