Construction of the remaining line proceeded rapidly to Daggett, California, where it connected to the Atchison, Topeka and Santa Fe Railway (ATSF), and the complete Salt Lake–Los Angeles line was opened on May 1, 1905. In California, Clark negotiated a trackage rights agreement from Daggett to Riverside, California, allowing his new line to use the existing ATSF route over Cajon Pass, in lieu of constructing its own tracks across the pass.
Construction of the remaining line progressed rapidly to Daggett, California, where it connected to the Atchison, Topeka and Santa Fe Railway (ATSF), and the complete Salt Lake–Los Angeles line was opened on May 1, 1905. In California, Clark negotiated a trackage rights agreement from Daggett to Riverside, allowing his new line to use the existing ATSF route over Cajon Pass, in lieu of constructing its own tracks across the pass.