Highway 101, as it is still referred to in northern San Diego County, is a heavily used road. Portions still retain the old feel, others have been completely changed and modernized. On a nice summer afternoon, 101 is a great drive from Oceanside to San Diego. Each town encountered has a different look and feel to it. Most embrace the historic aspect of the highway, and have put up signs to that end. Through San Diego and south to the Border, US 101 is a more inland route, going on the east side of San Diego Bay, heading through cities the whole way.
Related Pages:
I wish I could find old maps of 101 for this area.
What era are you looking for? We do have some maps posted on this site as well as links to other resources that may help.
https://www.socalregion.com/highways/maps/
https://www.socalregion.com/highways/maps/mapping-resources/