Back on US 30 [after Alston], you quickly turn off to the right onto Beaver Falls Road, a long stretch of the former LCRH using the Beaver Creek canyon to drop down to Clatskanie over a ten-mile course. The Beaver Creek section was replaced in 1953 by the steeper and straighter stretch of seven miles dropping down from the upper Beaver Valley directly to Clatskanie, without the bridges, twists and turns.
After getting on the former LCRH section as it drops down through the forested Beaver Creek canyon, you cross over the two bridges definitely dating to 1918. Those two are the first bridges you cross the stream on after leaving US 30. Others downstream are later remodels, and the 1918 bridges are also planned for replacement soon.