High Quality Content by WIKIPEDIA articles! The Mansfield Branch Line, located in Eastern Washington State, Douglas County, was constructed by the Great Northern Railway in 1909, and was completed in just 9 months. Starting from the Columbia River and ending in Mansfield, the 60.62 miles (97.56 km) of track cut through the southern portion of the Moses Coulee, snaked up Douglas Creek and made its way across the vast wheat fields of the Waterville Plateau. The train made scheduled stops at Palisades, Alstown, Douglas, Supplee, Withrow, Touhey and Mansfield to drop off and pick up loaded 40 ft (12 m) boxcars of grain from The Waterville Union Grain Co. (a predecessor of the Central Washington Grain Growers, Inc. (CWGG)).