The Mayfield Cutoff (also called the Vasona Line) was a railway line in Santa Clara County, California. It branched from the Coast Line at California Avenue in Palo Alto and ran south to Vasona Junction where it met up with the South Pacific Coast Railroad. The southern segment remains in use for freight trains.
It was constructed by the Southern Pacific Railroad between 1906 and 1908.[1] Some of the right of way was shared with an electrified track used by the Peninsular Railway between 1909 and 1933.[2] It was built as a vessel to open up the west side of Santa Clara Valley for development.[3] The line saw passenger service as a branch of the Peninsula Commute, which ran between Los Altos and Los Gatos via the cutoff. Service along the northern end of the line ended in early 1964, though the tracks temporarily remained pending a federal ruling.[4] [5] The rails north of Permanente Junction were removed and much of the right of way reused for the Foothill Expressway, which was under construction by 1966.[6] Kaiser Cement Corporation had a private spur from the line leading to their Permanente Quarry. The plant remains active (though is planned to close[7]) and tracks continue to be used for freight as part of the Union Pacific Vasona Industrial Lead. The former line is the preferred west-side routing for future VTA light rail expansion.