Sargent and Monterey Road were ultimately incorporated as part of the American El Camino Real which began being signed as an Auto Trail starting in 1906. The era of State Highway Maintenance through Sargent would ultimately begin with the 1909 First State Highway Bond Act which was approved by voters in 1910. One of the highways approved through the 1909 First State Highway Bond Act was a 481.8-mile highway originating at the City Limits of San Francisco which terminated in San Diego. This highway would ultimately come to be known in time as Legislative Route Number 2 ("LRN 2"). During 1913 the Pacific Highway was plotted as a major Auto Trail which had Sargent along it's planned route.
The May 1913 California Highway Bulletin describes the selected corridor of LRN 2 passing through Sargent by way of Gilroy and Bloomfield Farm towards San Juan Bautista.
The May 1913 California Highway Bulletin noted LRN 2 was expected to be fully paved between San Francisco and Sargent by the end of 1913.