Mobility & Infrastructure
Committee Memorandum
TO: MOBILITY & INFRASTRUCTURE COMMITTEE DATE: SEPTEMBER 11, 2025 FROM: PUBLIC WORKS DEPARTMENT WARD: 5
SUBJECT: UPDATE ON SR-91/ADAMS STREET INTERCHANGE RECONFIGURATION PROJECT BY PUBLIC WORKS DEPARTMENT ISSUE:
Receive and file an update of the SR-91/Adams Street Interchange Reconfiguration Project by the Public Works Department.
RECOMMENDATION:
That the Mobility and Infrastructure Committee receive and file updates on the SR-91/Adams Street Interchange Reconfiguration Project.
BACKGROUND:
On April 26, 2016, the City Council approved a Professional Consultant Services agreement with T.Y. Lin International, Ontario, for $405,401 from the Public Works Department budget for Request for Proposal No. 1560 for preparation of a Project Study Report-Project Development Support (PSR-PDS) for the State Route 91/Adams Street Interchange Reconstruction (Project).
On July 26, 2016, the City Council approved a Cooperative Agreement with the State of California Department of Transportation (Caltrans) for the review and approval of all the Project Initiation Documents for the Project in an amount not-to-exceed $150,000.
On November 28, 2017, the City Council approved an agreement with the Western Riverside Council of Governments for $4.1 million in Transportation Uniform Mitigation Fee funding for the planning and engineering phases of the Project.
On July 16, 2019, the City Council approved a Professional Consultant Services agreement with T.Y. LIN International for $2,205,053 from the Public Works Department Budget from the Request for Proposal No. 1871 for the preparation of the Project Approval and Environmental Document (PA&ED) for the State Route 91/Adams Street Interchange Reconstruction.
Following several project milestones, public meetings, and stakeholder updates, on August 6, 2024, the City Council approved the Third Amendment to Professional Consultant Services Agreement (Amendment) with T.Y. LIN International (TYLIN) for the PA&ED phase of the State Route 91/Adams Street Interchange Reconstruction, increasing the compensation by an additional $163,426.00 for a total amount of $2,421,375.00. This increase in compensation was to prepare additional environmental studies and reports according to new State and Federal requirements DISCUSSION:
The PA&ED phase of this project is anticipated to be completed by Fall 2025. The table below summarizes the schedule for the future milestones of this project upon funding availability:
Milestones
Anticipated Completion
Project Approval & Environmental Document
Fall 2025
*Plans, Special Provisions, and Estimates
Fall 2027
*Right-of-Way Acquisition
Summer 2028
*Start of Construction
Fall 2028
End of Construction
Fall 2030
*Upon funding availability
The following table shows the costs and fundings for each phase of this Project:
PHASE
ESTIMATE
(in thousands)
TUMF Funds (in thousands)
STP
(in thousands)
Local
(in thousands)
PSR/PDS
$600
$600
PA & ED
$4,435
$2,000
$935
$1,500
PS & E
$8,600
$2,100
RIGHT-OF-WAY
$21,000**
CONSTRUCTION
$94,552**
TOTAL
$129,187
$4,100
$935
$2,100
**2023-dollar value
FISCAL IMPACT:
There is no fiscal impact associated with this report.
Prepared by: Thuy Nguyen, Principal Engineer
Approved by: Gilbert Hernandez, Public Works Director
Certified as to
availability of funds: Kristie Thomas, Finance Director/Assistant Chief Financial Officer Approved by: Kris Martinez, Assistant City Manager
Approved as to form: Rebecca McKee-Reimbold, Interim City Attorney Attachment: Presentation
SR-91/Adams Street Interchange Reconfiguration Project Update ● Page 2