East Blithedale Rehabilitation Project

East Blithedale Project Banner

The April 21st Virtual Community Meeting Recording is available here.

Project Overview:

The City of Mill Valley recognizes East Blithedale Avenue as a vital corridor between downtown Mill Valley and Highway 101 as it serves as the northern gateway into the City’s residential, school and business areas.

The East Blithedale Avenue Rehabilitation Project is currently divided into 3 phases and the goal is to rehabilitate aging pavement conditions, install new bike lanes, upgrade existing traffic signals, and improve access. 

The project will interrupt the normal course of business and residential living in the projeast_blithedale_streetviewect area. The City is working to address key issues to minimize, where possible, construction-related impacts such as traffic congestion, noise, debris, parking, business operations, deliveries, and accessibility for residents, employees, and customers.

Project Update (November 2022)

East Blithedale Avenue is now open to through traffic between Camino Alto and Downtown Mill Valley. Motorists may experience localized closures or flagged one-way traffic control until May 2023. We encourage motorists to use Miller Avenue to access Downtown Mill Valley.

Crews continue working on East Blithedale Avenue between Sunnyside Avenue and Amicita Avenue to allow for ongoing improvements with sanitary sewer, storm drainage, and concrete work, which involves replacing curb ramps, curbs, gutters, sidewalks, and driveways. We appreciate your continued patience as work continues to progress!

Sycamore Avenue Pavement Rehabilitation:

  • Paving Cancellation: There will be no paving on Sycamore Avenue, originally scheduled for the week of November 14, 2022. The cancellation is due to Sycamore Avenues having an abundance of trees creating shade and low morning temperatures which slows warming to an acceptable ambient temperature for paving. In addition, the recent time change minimizes our workday to work safely in daylight. The pavement restoration will be rescheduled for late spring when temperatures rise. The residents of Sycamore Avenue can use street parking.

East Blithedale Rehabilitation Phase 2 (Mesa Avenue): 

  • Work crews will continue concrete work at Mesa Avenue and East Blithedale Avenue. Flaggers will conduct one-way traffic control. Pedestrians may use the south side sidewalk. 

East Blithedale Rehabilitation Phase 3 (Hill Street to Elm Avenue (west):

  • Work crews will continue concrete work along the north side of East Blithedale Avenue. Storm drain system improvements will continue between Mountain View Avenue and Grove Street. 
  • Motorists should expect minor delays with flagged one-way traffic control. Bus riders should be aware that bus stop 40139 at Mountain View Avenue will be out of service. Nearby stops can be found here.

Sanitary Sewer Rehabilitation Phase 3 (Sunnyside Avenue to Millwood Street): 

  • Work crews will install cured-in-place-pipe (CIPP) lining the week of November 14th. This is a trenchless rehabilitation and restoration method used to repair existing pipes. 
  • During the installation, residents near the work will notice a chemical odor. This is the smell of styrene, a component of the resin used to saturate the sewer liner. This odor will quickly dissipate once the installation process is complete. 
  • Sewer laterals to the residents will not be closed during the installation.

What you can do:

  • Before Sewer CIPP Work Begins: Pour a gallon of water into sinks, floor drains, or other drainage openings, especially those that are seldom used and whose traps may be empty of water. This should prevent any odor from entering your building or home. 
  • During Sewer CIPP Work: Limit activities that use large volumes of water, such as doing laundry, dishwashing, flushing toilets and bathing. If you do detect an odor, simply open your windows and/or turn on a fan to help ventilate the building. This level of concentration of airborne styrene does not pose a health risk.

Project Map:
East Blithedale Phase 1 complete

Some key design features include:

  • Pavement rehabilitation 
  • Widening sidewalks at three utility pole locations
  • Installing approximately 43 new ADA compliant curb ramps
  • Widening the sidewalk in front of Boyle Park
  • Installing Class III bike lane street markings from Sunnyside Avenue to Sycamore Avenue
  • New bike route signing and striping improvements at the Millwood Avenue and Sycamore Avenue intersections
  • Extending curbs ramps (bulb-outs) at Sunnyside Avenue, Mountain View Avenue, Dell Street, Thalia Street, East Drive, and Mesa Avenue.
  • Installing rectangular rapid flashing beacons at six uncontrolled crosswalks
  • Sewer repair and lateral replacement


Phase I construction: Final paving completed by June 2022. 
Phase II construction: April 2022 - October 2023
Phase III construction: April 2022 - October 2022

Click here to sign up for project updates and stay up to date with construction alerts.