Highway One Sonoma Mileage Marker 22
For east-west roads, mile 0 is on the west end, and numbers increase going east. For north-south routes, mile 0 is at the southern end, and numbers increase going north. Numbering restarts every time you cross a county line.
Here's how to read them, using the photo above as an example.
- The number at the top of the sign is the highway number. In the photo, it's CA Hwy 1
- The letters indicate the county. The marker above is in Sonoma County (SON)
- The numbers indicate the mile it marks. This one is at mile 22.
Reading the sign from top to bottom, it's easy to see that you are standing on California Highway One in Sonoma County, 22 miles north of the county line.
This digital limited edition design is printed to order on premium poster paper.