San Francisco Public Utilities Commission Seismic Upgrade of Bay Division Pipeline 

Nos. 3 & 4 at Hayward Fault

San Francisco, CA

The SFPUC engaged an MCK/EPC team to manage the work on the seismic upgrades of the two main water pipelines that supply potable water to over 2.5 million customers in the San Francisco Bay area. 


The 78-inch and 96-inch pipelines, known as Bay Division Pipeline (BDPL) Nos. 3 and 4, cross the Hayward fault in three locations in Freemont. Originally built in 1952 and 1973, BDPL Nos. 3 and 4 are critical water mains in the Hetch Hetchy Regional Water System that must function following a seismic event.


This $75M project reached completion early 2015.