Hawthorne Undergrounding District

Construction has begun!

The Hawthorne Utilities Undergrounding Project will place electrical and communication utilities underground throughout the District. 

Construction Updates

Check below for the most recent update on construction activities, detours, and more. 

July 19-August 31: Tiburon Boulevard Road Closure
Starting on Monday, July 19 at 8:00 a.m., Tiburon Boulevard will be fully closed to allow for Ranger Pipeline to begin utility work in the area. This closure will last approximately six weeks, through August 31. Construction activities will take place from Mondays through Fridays, 8:00 a.m. to 5:00 p.m.

There will be a detour in place during this road closure, and community members should expect 15-20 minute delays when traveling through the area. Motorists can use the detour established on Rock Hill Road, Hilary Drive, and Avenida Miraflores during this closure. Please refer to the map below indicating where the road closure and detours are planned. We thank you for your patience. 

Temporary No-Parking Zone
During the Tiburon Boulevard road closure, there will be a temporary no-parking zone on the north side of Hilary Drive, between Rock Hill Road and Theresa Court. Residents will still be able to access their homes and driveways during all hours of the day. 

Project Schedule

Below is a schedule of anticipated construction milestones, which is subject to change.


Picture1 Opens in new window

Stay Updated!

You can sign up to receive project email updates here

Questions about upcoming or current construction activities?
Find answers to Frequently Asked Questions or call the project hotline at (415)888-9229. 

Download or share the Project Contact Card

Funding & Costs

On January 15, 2021, the Town opened construction bids; they are within the District budget. The Town has received the final PG&E cost estimate and has since awarded the construction contract and issued the bond. 

Project Documents

Final Residential Service Lateral Plats


Previous Neighborhood Meetings

More information about the Hawthorne Undergrounding District can be found at http://www.townoftiburon.org/296/Hawthorne-Undergrounding-District.

Page Last Updated 7/15/2021