The Snake River Valley Railroad built a rail line on the left (southeast) bank of the Snake River between Wallula and Grange City, Washington, United States, a distance of 65.85 miles (105.98 km).
The company was incorporated in Oregon on March 3, 1898, and opened its line, operated by the Oregon Railroad and Navigation Company (OR&N), on December 1, 1899.
[1] The Snake River Valley Railroad also did some work on the right bank above Riparia for a continuation to Lewiston, Idaho, which was instead completed by the Oregon, Washington and Idaho Railroad.
)[1] The line between Wallula and Grange City is still operated by the UP as a main line, mostly as part of the Hinkle, Oregon – Spokane, Washington Ayer Subdivision.
At Ayer Junction, this line turns north across the Snake River, and the remaining distance to Grange City is part of the Riparia Subdivision.