Road Construction Updates


As of close of business tomorrow the 18 Water Main Project on E Washington will be officially shut down until January 6th for the holiday season, one day earlier than promised at the Petaluma Downtown Annual Holiday meeting.


Team Ghilotti has completed the testing of the new mains and services and has loaded the line with chlorine.

They have temporary-paved all open trenches, removed all metal plates in the ROW and have temporary-paved the sidewalk at all meter locations to eliminate any trip hazards. Tomorrow they will complete the clean-up and winterize the site. They will be changing the changeable message boards to read:



Contract work after January 6th will involve lane closures on E. Washington and the side streets, but to a much lesser degree than we have been experiencing over the last few weeks. 


Contract Work to be completed:

Water main tie-ins

Transfer ex water services to new main

Abandon ex mains

Concrete road base

Paving (weather dependent)


Job close-out



Click here to download current Road Closure Schedule for the City of Petaluma


U.S. 101 / State Route 116 Construction in Petaluma

For more information about the project, please visit our website at

Follow us on Twitter: Caltrans District 4 @Sonoma101.


The Press Democrat's Road Warrior has updates on Road Closures in Sonoma County every week.


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