4047 etr mailing address

The mailing address for the 4047 ETR (Electronic Toll Road) in California is:

4047 ETR P.O. Box 1390 San Mateo, CA 94401-1390

Please note that this is a general mailing address and may not be the specific address for a particular toll transaction or account. If you are looking for a specific address for a toll transaction or account, you may want to check with the toll authority or the company that manages the toll road for more information.