Water Main and Sewer Replacement on Grand View Avenue
Overview
The objective of the project is to replace aging water facilities which have a history of reoccurring main breaks in order to improve reliability of distribution system and replace sewer pipes that have reached the end of their useful life.
The work to be performed under this contract includes the replacement of existing water mains with 8-inch and 12-inch ductile iron pipe and replacement of existing sewer mains with 12-inch vitrified clay pipe, installation of new curb ramps and pavement renovation.
Critical upgrades are planned in the following areas:
Water work will occur on Grand View Avenue between Clipper Street and Romain Street, as well as 25th Street from Grand View Avenue to Homestead Street, 24th Street from Grand View Avenue to Hoffman Avenue, 23rd Street from Grand View Avenue to Hoffman Avenue, 22nd Street from Hoffman Avenue to Worth Street, Alvarado Street from Grand View Avenue to Douglass Street, Elizabeth Street from Grand View Avenue to Hoffman Avenue, Fountain Street from 25th Street to 24th Street, Hoffman Avenue from Elizabeth Street to 22nd Street and Romain Street from Market Street to Douglass Street.
Sewer work will occur only on 22nd Street from Hoffman Avenue to Worth Street; on Hoffman Avenue from Elizabeth Street to Alvarado Street; and on 25th Street from Fountain Street to Hoffman Avenue.
Construction Start: June 2025
Construction End: Fall 2026
Project Phase: Construction
Construction work referenced in the Construction Look Ahead features:
Concrete Panel Replacement
Residents are notified in writing 15 days in advance and again 24-hours in advance. City streets with steep slopes are usually covered in concrete because it makes for a more durable road surface than asphalt. However, concrete requires more time to construct. The contractor first must demolish the old concrete and haul away the debris. Next the construction crew builds special forms out of wood to contain the concrete. Once poured, the concrete needs time to harden (called “curing”). Typically, the street is cordoned off for up to 10 days for this curing process. Driveways, however, can usually harden enough within 36-48 hours so that residents’ vehicles can go into and out of their garages. Because of the long curing period, concrete panels are replaced only on one side of the street at a time. Once the panels are fully cured, the concrete panels on their other side of the street can then be replaced, starting with new written 15-day and 24-hour advanced notices to each resident address affected.
Services
The contractor excavates a trench from the residence of business water meter to the new water line in the street.
Service connections and changeovers
The contractor uncovers the new trench between the water meter and the new water line so that plumbers from the San Francisco Public Utilities Commission can connect the new pipeline to the water meter.
Saw-cutting the Pavement
The contractor marks the pavement with lines that designate where to dig the trench for the new water or sewer pipeline. The saw-cut crew cuts through the asphalt or concrete road surface.
Install water main
The contractor removes the saw-cut paving material and completes the excavation of the trench. Then the contractor places the new pipe into the trench and connects it with other pipelines already installed.
Saw cut and excavate water connection
See service connections and changeover.
T-Trench
Compacting the fill-material in the trench and placing concrete on top as a road base.
No Parking Signage
Contractors who plan to work in city streets, i.e., digging trenches for water, sewer or other public utilities are required acquire permits from the city to post No Parking signs on city streets at least 72 hours in advance. The signs tell you exactly which dates, hours and portions of the street are subject to No Parking.
Look Ahead Notices
The Contractor is required to tell the SFPUC staff when and where the contractor’s crews will be working. The information is published on the SFPUC web site for each individual project. In addition, the Project Communications Director will summarize the details of the contractor’s activity and mail a postcard in advance of this activity to affected residents. The notice will contain contact information for further details.