San Anselmo (Butterfield/Meadowcroft-Arroyo) Sewer Improvements

FY 2016/17 Gravity Sewer Improvements


Project Schedule

Mobilize:      Spring 2019

Complete:  Fall 2019

September 2019 Update

Project contractor K.J. Woods, Inc. is performing critical improvements to Ross Valley Sanitary District (RVSD) sewer infrastructure in the Meadowcroft neighborhood as part of the San Anselmo Sewer Improvements (Butterfield/Meadowcroft-Arroyo) Project.

Work to complete road and sidewalk repair on Butterfield Road will take place during the next 3 Saturdays. Work is anticipated to be complete by Saturday, September 28.


Work will take place from 9 AM – 5 PM weekdays and 8 AM – 5 PM on Saturdays. This capital improvement project is designed to replace outdated system infrastructure and enhance system reliability.

The same one-way traffic control will be implemented during weekdays, with the lane closure in effect until 5 PM. All lanes will be opened for 15-30 minutes (at school dismissal) to permit school-traffic to clear. ALL school bus stops along Butterfield will remain accessible.


  • On Saturdays, Butterfield will be open in the northbound direction only. 
  • Southbound traffic will use the posted detour from Butterfield – Arroyo—The Alameda—Berkeley—Broadmoor—Sir Francis Drake Blvd.
  • Traffic delays and backups will be minimized as much as possible.
  • Traffic flaggers will assist pedestrians at intersections, as necessary.
  • Construction equipment to include paving machine, dump trucks, concrete mixer, compaction equipment and front-end loaders.


Regular work hours and road closures will be Monday – Friday, from 7 AM to 4 PM.  This schedule is weather dependent and subject to change. We will notify you if changes are necessary.

  • Work is anticipated through mid-November 2019.
  • Expect traffic delays on Butterfield Rd. 
  • Phase Two construction on Willow Way and Meadowcroft is scheduled to begin fall 2019. 

Click here to view the June 14 Construction Notice (PDF) for more information about construction along Butterfield Road, Meadowcroft Drive, Brookmead Court, and Willow way.

Project Information and Construction Notices

Please see individual project construction notices for information about allowable work hours in each work area.

  • Click here to view the Project Information Sheet.
  • Click here to view the April 5, 2019 Town of San Anselmo - Meadowcroft Dr Paving Project Update.
  • Click here to view the Butterfield/Meadowcroft-Arroyo project presentation given at the March 28, 2019 open house.
  • Click here to view the July 24, 2018 San Anselmo Town Council presentation.

Project Map

Please see the Current Infrastructure and Upcoming Capital Projects map below or click here to view both current and completed CIP projects on an interactive map. You can also go to the project pages listed on the left of this page for more information about other CIP projects that are under construction or scheduled to begin soon.

Project Contacts

Project Manager - Jill Barnes, P.E. 


Call:  415-905-0680

Construction Manager - Justin Seufert, P.E. 


Call:  530-966-7901

Project Summary

The San Anselmo (Butterfield/Meadowcroft - Arroyo) Sewer Improvements will replace old or outdated system infrastructure and enhance local wastewater system reliability and efficiency. Construction to improve system performance during wet weather will involve installation of 2,300 linear feet (LF) of sewer pipeline ranging in size from 8 to 18 inches in diameter and work on associated structures.

Project Coordination

RVSD, the Marin Municipal Water District (MMWD), the Town of San Anselmo (Town), and Marin County are coordinating to reduce construction impacts. A partnership between the Town, MMWD, and RVSD allowed narrow sections of The Alameda to be widened, providing a safer route and enhanced fire and police access. RVSD will complete improvements that are already under way on Sir Francis Drake Blvd., Broadmoor Ave., and Meadowcroft Dr. in spring 2019.

Coordinated project planning with the Town, local schools, and transit and fire districts will help to reduce traffic impacts from the upcoming Butterfield/Meadowcroft - Arroyo project. Sewer pipelines in Butterfield Rd., from Arroyo Ave. to Caleta Ave. are planned for replacement in summer 2020.

Project Construction Will Include

  • Sanitary sewer replacements on public and private property.
  • Sewer pipeline installation via open-cut removal and replacement, pilot tube guided bore construction, pipe lining methods, and pumping of sanitary sewer flow as-needed.
  • Excavation, shoring and backfill, saw cutting and lateral replacement, pipe and manhole repairs and pavement restoration.

What You Can Expect

Please expect noise, dust, lane closures and detours, parking restrictions, travel delays, and night-time work near the work sites during construction activity. Written notification and road signage with specific construction details will come from the contractor. Mail and package delivery to these areas will not be interrupted. Local and emergency access will be maintained at all times.

  • Noise, Dust, Lane Closures and Detours, Restricted Parking, Travel Delays, Night-Time Work

More Information About Construction Projects


To find out if there will be construction in your neighborhood

Notify Me at and click to select the Construction Updates you want.


To leave a message or request being added to the project email list

Call RVSD at 415-259-2949. Our office staff are available Monday - Friday from 7:30 a.m. to 4 p.m. 

We can assist you with emergency service 24 hours per day, seven days per week.

RVSD APPRECIATES your patience as we fulfill our commitment to making strategic long-term infrastructure improvements.