Advisory
AVOID West Sierra Ave (ORH to Hwy 101) from 7am to 5 pm starting 10/27 extending through December.
AVOID West Sierra Ave (ORH to Hwy 101) from 7am to 5 pm starting 10/27 extending through December. 
City of Cotati advises you to AVOID W Sierra Ave from ORH to Water Road due to a sewer replacement project. The sewer installation will require one way traffic control along sections of W Sierra Ave and is anticipated to cause significant traffic backups. Plan ahead to use alternative routes.
https://cleargov.com/admin#/projects/6025
Address/Location
City of Cotati
201 West Sierra Avenue
Cotati, CA 94931
Contact
Emergency: 9-1-1
Non-emergencies: 707-792-4600