Blast from the Past

Building of the Plank Road

In this edition of “Blast from the past,” we share an issue from 1924 of the official publication of the California H ighway Commission. This issue shows views on the California State Highway in southern Imperial County, near the Mexican border, the trunk line to Yuma, and a description of the materials and techniques used in constructing the Plank Road. Click here to view the full document.