Oakland Inner Harbor Pipeline Crossing

Pipeline construction in Oakland is scheduled to start in late July, as the Open Trench Pipeline work is warping up in Alameda. The contractor for the East Bay Municipal Utility District (EBMUD) is installing 3,000 Linear Footage of 24-inch steel pipeline to connect the Oakland Inner Harbor Pipeline Crossing to existing transmission OIH Mapmains. Upon completion in December 2023, the project will improve the hydraulic connectivity between Alameda and Oakland and enhance the reliability of the water supply to the island. 


In April, the EBMUD installed approximately 3,000 feet of 32-inch diameter earthquake-resistant pipeline below the Oakland Estuary floor to serve the City of Alameda. The new pipe, replacing a 1940s-era cast iron pipeline, took three months to construct. It went underneath the Oakland Inner Harbor via Horizontal Directional Drilling (HDD), which involves drilling a borehole beneath the harbor floor from Alameda to Oakland and pulling the new pipeline through the borehole.


EBMUD's contractor performed final paving on streets in Alameda and Oakland. Installation of the pipelines are mostly completed and they are now active. The old crossing pipe will be close in early 2024.

Media Clip

East Bay MUD project will make Alameda's water supply earthquake safe on KTVU FOX 2.

Public Meeting

EBMUD had conducted a virtual public meeting on Wednesday, October 5, 2022. See a recording of the meeting below.

Frequently asked questions   

  What impacts are expected when pipelines are installed?  

  What work is happening near you? Use our map

  What is EBMUD's plan to replace pipelines?  

Contact Information

Community Affairs
Email: construction-south@ebmud.com 
Phone: 510-287-0544

Emergencies or after-hours, call EBMUD 866-403-2683

Related Resources

To review all planning and design stage details for this project please see Alameda - North Bay Farm Island Pipeline Crossings