City Council Memorandum
TO: HONORABLE MAYOR AND CITY COUNCIL DATE: AUGUST 19, 2025 FROM: PUBLIC WORKS DEPARTMENT WARD: 5
SUBJECT: FOURTH AMENDMENT TO PROFESSIONAL CONSULTANT SERVICES AGREEMENT FOR THE SR-91/ADAMS STREET INTERCHANGE RECONFIGURATION PROJECT APPROVAL AND ENVIRONMENTAL DOCUMENTS PROJECT WITH T.Y. LIN INTERNATIONAL OF ONTARIO, CALIFORNIA, EXTENDING THE TERM THROUGH AUGUST 22, 2028 ISSUE:
Approve the Fourth Amendment to Professional Consultant Services Agreement for the SR-91/Adams Street Interchange Reconfiguration’s Project Approval and Environmental Documents Project with T.Y. LIN International of Ontario, California, to extend the term through August 22, 2028.
RECOMMENDATION:
That the City Council approve the Fourth Amendment to Professional Consultant Services Agreement for the SR-91/Adams Street Interchange Reconfiguration’s Project Approval and Environmental Documents Project with T.Y. LIN International of Ontario, California, to extend the term through August 22, 2028; and Authorize the City Manager, or designee, to execute the Amendment, including making minor and non-substantive changes.
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.
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 State Route 91/Adams Street Interchange Reconstruction 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 and authorized a supplemental appropriation in the amount of $4.1 million in TUMF funds.
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.
On June 16, 2020, the City Council approved the First Amendment to Professional Consultant Services Agreement (Amendment) with T.Y. LIN International (TYLIN) for the Project Approval and Environmental Documents (PA&ED) phase of the State Route 91/Adams Street Interchange Reconstruction, increasing the compensation by an additional $52,895.00 for a total amount of $2,257,948.00. This increase in compensation was to prepare a detailed study to assess one additional alternative, the ”ovalbout,” for its queuing capacity, maneuverability, constructability, right-of-way impacts, and most importantly, its operational improvements and Level of Service (LOS).
On September 14, 2023, the Second Amendment to Professional Consultant Services Agreement was executed to extend the original Professional Consultant Services Agreement, including its original terms to August 22, 2025.
On August 6, 2024, the City Council approved the Third Amendment to Professional Consultant Services Agreement with TYLIN, increasing the compensation amount by an additional $163,426.00 for a total contract amount of $2,421,375.00. The increase in compensation was to prepare additional environmental studies and reports due to the newly adopted State and Federal requirements.
DISCUSSION:
The current agreement with TYLIN is set to expire on August 22, 2025. As there are additional efforts to complete the project, staff recommend extending the contract together with all the existing terms and conditions to August 22, 2028.
Purchasing Resolution 24101, Section 1104 – Change Orders, states “Modifications to a Purchase Order shall be made only by Change Order. Subject to the availability of funds, Change Orders may be utilized for purposes of… (5) modifying contract completion time or the term of a Contract. Unless otherwise specifically authorized by the Awarding Entity, Change Orders which cumulatively exceed the following will require Awarding Entity approval…(d) A Contract amendment which extends the term of the agreement beyond one year of the original expiration date.”
The Purchasing Manager concurs that the recommended action complies with Purchasing Resolution 24101, Section 1104(5) and (d).
STRATEGIC PLAN ALIGNMENT:
This item contributes to Strategic Priority 6 – Infrastructure, Mobility and Connectivity and Goal No. 6.2 – Maintain, protect, and improve assets and infrastructure within the City’s built environment to ensure and enhance reliability, resiliency, sustainability, and facilitate connectivity.
Furthermore, this project aligns with each of the Cross-Cutting Threads as follows:
Community Trust – Riverside is transparent and makes decisions based on sound policy, inclusive community engagement, involvement of City Boards & Commissions, and timely and reliable information. Activities and actions by the City serve the public interest, benefit the City’s diverse populations, and result in greater public good. The proposed improvements are part of a significant endeavor to improve traffic circulation and resolve congestions on City’s streets surrounding the Adams Street interchange.
Equity – Riverside is supportive of the City’s racial, ethnic, religious, sexual orientation, identity, geographic, and other attributes of diversity and is committed to advancing the fairness of treatment, recognition of rights, and equitable distribution of services to ensure every member of the community has equal access to share the benefits of community progress. The Project will improve the operational efficiency of traffic for everyone using the Adams Street on/off ramps to access the City’s local streets, businesses, and residential communities.
Fiscal Responsibility – Riverside is a prudent steward of public funds and ensures responsible management of the City’s financial resources while providing quality public services to all. The proposed Project improvements will enhance accessibility and resolve traffic congestion around the Adams Street interchange, hence equating to time saved from queuing in traffic.
Innovation – Riverside is inventive and timely in meeting the community’s changing needs and prepares for the future through collaborative partnerships and adaptive processes. This project provides an improved solution to address the existing traffic congestion around the SR-91/Adams Street interchange.
Sustainability & Resiliency – Riverside is committed to meeting the needs of the present without compromising the needs of the future and ensuring the City’s capacity to persevere, adapt and grow during good and difficult times alike. The proposed multi-modal improvements—vehicular, bicyclists, and pedestrians—associated with this project will enhance sustainability well into the future years.
FISCAL IMPACT:
There is no fiscal impact associated with amending the agreement to extend the term.
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: Fourth Amendment Agreement
T.Y. LIN International Fourth Amendment ● Page 2