Meeting_Body
CONSTRUCTION COMMITTEE
OCTOBER 23, 2024
Subject
SUBJECT: DIVISION 20 PORTAL WIDENING TURNBACK FACILITY LOP INCREASE
Action
ACTION: APPROVE RECOMMENDATION
Heading
RECOMMENDATION
Title
INCREASE the Life-of-Project (LOP) budget by $99,730,000 for the Division 20 Portal Widening Turnback Facility (Project) from $956,749,577 to $1,056,479,577 using the fund sources as summarized in Attachment A, consistent with the provisions of the Board-adopted Measure R and Measure M Unified Cost Management Policy (Attachment B).
Issue
ISSUE
The Division 20 Portal Widening Turnback Project was designed to reconstruct the key facilities where all revenue service trains for the B/D Lines are dispatched, serviced, and maintained through a complex 11-stage phased construction plan. The design requires extensive coordination efforts to maintain revenue service and many construction steps to successfully complete the work. While the Project has achieved over 76% of the work, each phase is like a new project and begins with removing the original work completed over 30 years ago and constructing small sections that each have high-risk underground conditions not anticipated or unknown conditions.
Although there remains risk in the remaining work, the Project has successfully re-sequenced the Project schedule to achieve "Substantial Completion" by December 31, 2025. Collaborating with the Contractor, Tutor Perini Corporation (TPC), staff have worked to address and resolve previous issues related to Project design changes, schedule delays, and other cost impacts occurring before March 1, 2024. The re-sequenced schedule adjustments will have significant benefits, including reducing the project timeline, meeting the operational requirements for the revenue service date for the Purple Line Extension Section 1, and providing additional yard storage capacity for new rolling stock deliveries.
Achieving December 31, 2025, Substantial Completion date will necessitat...
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