Project Overview
The District conducted a watershed drainage study for the Line A-1 flood control system, which revealed a deficiency in the system’s capacity to convey the 100-year storm design flow.
Since the majority of Line A-1 is situated on private property, the District has proposed a bypass system along City right of way to increase system conveyance capacity and to lessen the amount of flow in the existing Line A-1 system during 100-year storm event. This bypass will intercept stormwater during high-flow events at Tanglewood Road, located in the City of Berkeley, and divert it through a newly constructed series of underground culverts along Claremont Avenue. The flow will then be directed into the existing underground culvert system at Mystic Street in the City of Oakland.
The primary objective of this improvement project is to mitigate flooding risks along the affected reach of Line A-1.
Project Features
- Underground 60” diameter culvert bypass system and associated transition junction structures
Community Meeting
Anticipate to be conducted as soon as preliminary engineering and alternative evaluation is completed, in Fall 2025
CIP Category
Capacity Improvement
Construction Start Date
Summer 2026
Status
The Project is in the preliminary design phase.
Project Location
Along Claremont Avenue between Tanglewood Road and Mystic Street in Cities of Berkely and Oakland
Supervisorial District
District 5
Project Manager
Paul Knobel, P.E.
Contact
For more information email info@acpwa.org. Click here to receive e-mail updates.
