East SOMA Sewer Improvements Project
Overview
The East SOMA Sewer Improvements Project will rehabilitate the existing 100-year-old sewer mains and sewer lower laterals located under several streets highlighted on the Project Maps.
Please check this project page for timely updates about the construction schedule and upcoming locations. To receive these updates via email, please complete the form on the right-hand side of this page.
Construction Scheduled for Late April – Early May 2025
Mission Street (7th and 6th)
- Excavation and replacement of sewer laterals and culverts will be continuous in the area from April 21 –25 and April 28 – May 2.
- Excavation of sewer culverts and other sewer related upgrades will continue May 5 - May 9.
Mission Street (6th and 5th)
- Excavation and replacement of sewer laterals will occur on April 25 and continue from April 28 – 29.
Howard Street (Fremont and Main)
- De-energization on street will occur May 1.
- Excavation of large manhole will occur on May 2 and continue May 5 – 7.
- Excavation and replacement of sewer laterals will occur May 8 – 9.
Schedule Subject to Change, last updated on 04/23/2025. Have questions? Please reach out to us by email at ssip@sfwater.org with 'East SOMA' in the subject line.
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Project Background
To minimize impacts to the roadway and adjacent residences and businesses, most of the sewer rehabilitation work will be performed using a trenchless method called Cured-In-Place-Pipe (CIPP). Construction will include improvements to sewer lower laterals within the project area. In some locations, street excavation may be required, and advance notice will be provided.
Project Benefits:
- Address aging sewer system infrastructure
- Increase reliability of our City’s critical sewer system infrastructure
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What to Expect During Construction
SEWER SERVICE: These services will NOT be interrupted during construction.
PARKING: Street parking will be impacted near construction zones. “No-parking” signs will be posted 72 hours in advance.
TRAFFIC: Partial lane closures may be necessary to ensure safety of workers and the public. Advance notice and detour signage will be provided, as needed.
MUNI: Passenger loading zone for bus stops may be temporarily relocated. Advance notice and detour signage will be provided as needed.
ACCESS: Follow posted signage on site. Driveway access to businesses and residents in the work zone will be maintained during construction.
NOISE: Neighbors may hear construction noise periodically. Noisy work will be conducted in compliance with the San Francisco Noise Ordinance.
ODORS: If necessary, odor control measures will be in place during construction. Please see CIPP page for more information: sfpuc.org/curedpipe.
NOTICE: A 30-day and 10-day notice will be distributed prior to construction to residents and businesses within the project area before construction begins.
- Project Materials
