A location survey of the Columbia River Highway was made by the State
Highway Department during 1918. Beginning at the John Day River near its
mouth the line follows up the Columbia River paralleling the O.-W. R. &
N. Railway and ends at Arlington. The total length of the survey is
twenty-three and ninety-six one-hundredths miles. The plans for the
eight and sixty-eight one-hundredths miles section from Arlington to
Blalock have been completed but there are revisions to be made in the
remainder of the line owing to right-of-way encroachments upon the
railroad property.
This survey was made under the direction of C. A. Harrington and B. H.
McNamee, locating engineers for the State Department.