The road bridges a flume, beginning of the Puget Sound Power and Light Company’s power canal to near-by Lake Tapps. Water from the White River, which flows north of the road, forms an artificial lake here. In the canal, set in the concrete dam, are eight rotary fish screens, reputedly the largest in the world, which prevent fish from entering the flume, saving from death thousands each year. Each of the fish screens is 12 feet long and is rotated by electric power. They were constructed in 1938 and 1939 by the WPA under the sponsorship of the State Department of Fisheries.

West of the canal, Sumner-Buckley Highway winds drunkenly along the edge of Dingle Basin and ascends through a lane of large trees to wide fields.