1774449469807-ecc57f6d-804063_1768428003.pdf

PDF 112 KB Posted Jan 14, 2026

Attached to: SFPUC Upcoming Contracting Opportunity: Design/Build the Transmission Line Clearance Mitigation Moderate and Low Risk
Solicitation number: DB-139R
Issued by: San Francisco County, San Francisco City, California

About this file

Written by GovTribe AI · Jun 12, 2026

This is a bid detail document from the San Francisco Public Utilities Commission (SFPUC), a department of the City and County of San Francisco, announcing an upcoming construction contracting opportunity for transmission line clearance mitigation work. The project, designated DB-139R, involves performing clearance mitigations on existing SFPUC-owned and operated 115kV and 230kV overhead power transmission lines spanning across four Bay Area counties (Alameda, Santa Clara, San Mateo, and San Francisco) and extending to Tuolumne County. SFPUC has identified approximately 115 moderate and low risk clearance detections and three additional risk clearance sites that are non-compliant with California General Order 95 (GO 95) and the National Electrical Safety Code (NESC). The Design-Builder will be required to implement mitigation measures to bring identified spans into compliance with NESC and GO 95 standards, with work potentially including site grading, increased conductor tensions, installation of floating dead-end suspension assemblies, tower structure raises, tower replacement, and intermediate mid-span tower structures. The project will utilize a progressive design-build delivery method in accordance with San Francisco Administrative Code section 6.61, subdivision (c), with advertisement targeted for February 2026 and a bid due date of December 31, 2099.

The estimated project cost is $55,000,000 to $60,000,000. The SFPUC will work collaboratively with the selected Design-Builder on defining and procuring multiple trade subcontracts for efficient and timely project delivery. A pre-bid conference is scheduled, though attendance is not mandatory. Interested parties can contact the Contractors Assistance Center at acp@sfwater.org or (415) 467-1040 for assistance and questions regarding the project. The Center operates Tuesday through Thursday from 9:00 AM to 5:00 PM. Additional information and updates are available at https://webapps.sfpuc.org/bids/ and https://www.sfpuc.org/construction-contracts/contractor-assistance/contractors-assistance-center. Certified Local Business Enterprise (LBE) firms are required to be listed on the HRC website for participation.

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1/14/26, 4:59 PM Bids On Line https://webapps.sfpuc.org/bids/bidDetail.aspx?bidid=4568 1/2

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HOME CONSTRUCTION BID LIST DB-139R

Bid Details

DB-139R

SFPUC Upcoming Contracting Opportunity - Transmission Line Clearance Mitigation Moderate and Low Risk

12/31/2099

2:00 PM

BID DUE

TYPE

CONSTRUCTION

DEPARTMENT

INFRASTRUCTURE

DIVISION

DETAILS DOCUMENTS SUB REQUESTS INTERESTED PARTIES

Project Description

****SFPUC Upcoming Contracting Opportunity****

The San Francisco Public Utilities Commission (SFPUC) will advertise a construction contract, DB-139R Transmission Line Clearance Mitigation Moderate and Low Risk. The SFPUC is actively working on the advertisement and has set a goal to advertise in February 2026.

Project Background The SFPUC is a Department of the City and County of San Francisco (“City”) that supplies drinking water to 2.7 million customers in the four Bay Area counties of Alameda, Santa Clara, San Mateo, and San Francisco, and upcountry near Groveland in Tuolumne County, and provides sewer services to San Francisco residents, hydroelectric power to San Francisco’s municipal operations, and clean, renewable power to San Francisco customers. The SFPUC manages over 160 miles (320 circuit miles) of high voltage transmission lines. The SFPUC transmission lines begin at power generation facilities at the Early Intake Switchyard in Tuolumne County and end at Newark Substation in Alameda County.

Project Delivery Due to the unique complexities of the design and construction required for this Project, the City has determined that the Project requires specialized expertise and skills, which should be procured using an alternate project delivery method in comparison to the traditional design-bid-build. The City has selected a progressive design-build project delivery method in accordance with San Francisco Administrative Code section 6.61, subdivision (c).

The Design-Builder will be obligated to collaborate with the

ESTIMATED COST $55,000,000 - $60,000,000

DUE DATE 12/31/2099

DUE TIME 2:00 PM

DURATION

LOCATION

CONTACT Contractors Assistance Center at acp@sfwater.org or (415) 467-1040

DATE

TIME

ATTENDANCE Not Mandatory

LOCATION

DATE

Request for proposal

Pre-Bid Conference

BACK TO CONTRACTS & BIDS LIST

https://sfpuc.org/accounts-services/report-problem https://sfpuc.org/about-us/careers-sfpuc https://sfpuc.org/contact-us https://sfpuc.org/ https://sfpuc.org/ https://sfpuc.org/construction-contracts https://webapps.sfpuc.org/bids/BidList.aspx https://webapps.sfpuc.org/bids/BidDetail.aspx?bidid=4568 https://webapps.sfpuc.org/bids/DocList.aspx?bidid=4568 https://webapps.sfpuc.org/bids/BidLbeList.aspx?bidid=4568 https://webapps.sfpuc.org/bids/BidderList.aspx?bidid=4568 https://webapps.sfpuc.org/bids/BidList.aspx

1/14/26, 4:59 PM Bids On Line https://webapps.sfpuc.org/bids/bidDetail.aspx?bidid=4568 2/2

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SFPUC on defining and procuring multiple trade subcontracts for efficient and timely project delivery.

Project Objectives The objective of the project is to perform clearance mitigations to spans of existing SFPUC owned and operated 115kV and 230kV overhead power transmission lines.

SFPUC has identified a possible one-hundred and fifteen

(115) moderate and low risk clearance detections and three

(3) additional risk clearance sites. The existing subject circuits have been identified by the SFPUC as being non-compliant with California General Order 95 (GO 95) and the National Electrical Safety Code (NESC). The Design-Builder will be required to perform mitigation measures for these identified spans to bring them into compliance with NESC and G095 standards and design criteria. Work may include site grading, increased conductor tensions, installation of floating dead-end suspension assemblies, tower structure raises, tower replacement, intermediate mid-span tower structures, or one or more combinations of the methods, or implementation of other solutions.

Visit https://webapps.sfpuc.org/bids/ for updates.

Want to Learn More?

If you need assistance or have questions regarding the project, you can contact the Assistance Center for help. The Center is open to the public Tuesday through Thursday from 9am to 5pm. You can also contact us by calling (415) 467-1040 or by emailing acp@sfwater.org. Visit us online at https://www.sfpuc.org/construction-contracts/contractor-assistance/contractors-assistance-center.

LIST OF CERTIFIED LBE FIRMS AT HRC WEBSITE

https://www.facebook.com/sfwater https://www.youtube.com/user/SFPUCcommunications https://twitter.com/sfwater https://www.linkedin.com/company/sfpuc https://www.instagram.com/sfwater https://sfpuc.org/accounts-services https://sfpuc.org/programs https://sfpuc.org/learning https://sfpuc.org/construction-contracts https://sfpuc.org/about-us https://sfpuc.org/accounts-services/account-services/payment-options https://sfpuc.org/about-us/public-notices-and-public-meeting-notices https://sfpuc.org/accounts-services/water-power-and-sewer-rates https://sfpuc.org/accounts-services/water-quality/annual-water-quality-reports https://sfpuc.org/CleanPowerSF https://sfpuc.org/construction-contracts/contract-opportunities-payments/prequalify-construction https://sfpuc.org/tools-residents https://sfpuc.org/tools-educators https://sfpuc.org/tools-developers https://sfpuc.org/construction-contracts/construction-projects https://sfpuc.org/sitemap https://sfpuc.org/about-us/contact-us https://sfpuc.org/accounts-services/report-problem http://sfwater.org/contracts https://www.sfpuc.org/construction-contracts/contractor-assistance/contractors-assistance-center https://sf.gov/find-certified-lbe-work

File details come from the government source that posted it. Updated Jun 12, 2026.