The Santa Susana Pass stagecoach road continued in use as an alternative to the route along El Camino Viejo from 1861 to 1875, replacing the older road as the main route between Los Angeles and San Francisco. William E. Lovett acquired the mail contract in 1867 and carried mail and passengers via the Santa Susana Pass and between Los Angeles and San Diego. In 1876, the Southern Pacific Railroad opened a tunnel through the Newhall Pass, enabling rail connections from Los Angeles north to San Francisco, and rail travel soon replaced travel by stagecoach between Los Angeles and San Francisco. From this time the stagecoach traffic to Santa Barbara once again used the coast route, and the road through Santa Susana Pass was relegated to local traffic.