City of Santa Rosa image CIP

Capital Improvement Project

Cobblestone Dr Zone R2-R4 Water Main Connection

Estimated Construction Schedule: Slated to begin February, 2023 and is anticipated to be completed October, 2023.
Construction Contract Amount: Pending
Project ID #: 1999
Description: This project is meant to improve fire protection water flow in the Cobblestone neighborhood only. Several fire hydrants serving approximately 48 homes at the north end of Cobblestone Dr have sub-optimal fire flow. A new 10 inch HDPE pipeline is proposed to connect the existing pipeline in Tillmont Way (Pressure Zone R2) to the existing 6 inch diameter pipeline located in Cobblestone Drive (Pressure Zone R4). In addition, to allow for the ability to isolate the Cobblestone Drive neighborhood water system to create a new pressure zone, approximately 174 LF of 8" diameter PVC water pipe will be installed near the southern end of the Cobblestone Drive loop.

December 2022 - Advertising expected in Dec or Jan: Invitation for Bids (IFB) will be advertised in December 2022, or January 2023 with bids due in January. Bid Award anticipated Febraury 2023.


Andrew Wilt
Associate Civil Engineer
City of Santa Rosa

Michael Mirich
Civil Engineering Tech III
City of Santa Rosa
+1 (707) 481-9395

Ben Bryant
Consultant Design Engineer
Brelje and Race

Other Information:
Notice of Intent to Adopt a Mitigated Negative Declaration
Final Initial Study MND with Addendum April 2020
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Project Image

Note: All dates and times are subject to change.