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File #: 25-552    Version: 1
Type: Report Status: Agenda Ready
File created: 10/13/2025 In control: REGULAR CITY COUNCIL AND HOUSING AUTHORITY*
On agenda: 11/4/2025 Final action:
Title: AMENDMENT NO. 7 TO AGREEMENT NO. C-5-3612 BETWEEN ORANGE COUNTY TRANSPORTATION AUTHORITY AND THE CITY OF COSTA MESA FOR THE I-405 IMPROVEMENTS PROJECT
Attachments: 1. Agenda Report, 2. 1. Amendment No. 7

TITLE:

title

AMENDMENT NO. 7 TO AGREEMENT NO. C-5-3612 BETWEEN ORANGE COUNTY TRANSPORTATION AUTHORITY AND THE CITY OF COSTA MESA FOR THE I-405 IMPROVEMENTS PROJECT

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DEPARTMENT:                                                               PUBLIC WORKS DEPARTMENT/ADMINISTRATION

PRESENTED BY:                                                                RAJA SETHURAMAN, PUBLIC WORKS DIRECTOR                     

CONTACT INFORMATION:                     RAJA SETHURAMAN, PUBLIC WORKS DIRECTOR, 714-754-5343

 

RECOMMENDATION:

recommendation

Staff recommends the City Council:

 

1.                     Approve Amendment No. 7 to Agreement No. C-5-3612 between Orange County Transportation Authority (OCTA) and the City of Costa Mesa for the I-405 Improvements Project and authorize the Mayor and the City Clerk to execute the agreement.

 

2.                     Appropriate $1,989,000 in compensation towards Pavement Mitigation I-405 Project.

 

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BACKGROUND:

OCTA and the City of Costa Mesa entered into Cooperative Agreement No. C-5-3612 in April 2016 for the I-405 Improvements project. The agreement identified roles and responsibilities of each agency for the implementation of the project. The City of Costa Mesa provided staff and consultant support to review project plans and assistance during the construction phase. OCTA’s role was for the implementation of the project meeting City and State requirements as well as reimbursement to the City for all services and costs incurred during the project, and for pavement restoration work caused by project detours. Over the past few years, several amendments have been made to the original agreement to authorize minor increases in allowances for project reviews as well as time extensions.

 

ANALYSIS:

The I-405 Improvements Project was substantially completed and formally opened to the public on December 1, 2023. OCTA and the City have been engaged on reviewing various punch list items as well as formalizing maintenance agreements with the State of California Department of Transportation (Caltrans) for areas within Costa Mesa’s portion of the project. City staff also reviewed pavement damages caused by I-405 project detours. The mitigation costs were updated based on most recent unit prices.

Amendment 7 (Attachment 1) authorizes an additional compensation of $1,989,000 to the City for Post Pavement Project Mitigation. This captures the pavement mitigation costs for various I-405 Project-related detours on Harbor Boulevard, Fairview Road and South Coast Drive that are outside the I-405 Project limits.

 

Staff requests that the City Council approve the subject amendment and authorize the Mayor and the City Clerk to execute the amendment. Staff also requests that the City Council appropriate $1,989,000 towards the Pavement Mitigation I-405 Project.

 

ALTERNATIVES:

The alternative to this Council action would be to not approve the amendment. This will result in potential loss of I-405 mitigation funding as well as delays to pavement mitigation work along various roadways. Staff does not recommend this action.

FISCAL REVIEW:

Upon approval from City Council, the City will receive $1,989,000 in compensation for pavement mitigation impacts along various I-405 Project detours. Funding will be appropriated towards the Pavement Mitigation I-405 Project in the Other Grants Fund (Fund 232).

LEGAL REVIEW:

The City Attorney’s Office has reviewed this agenda report and the proposed amendment and approves them both as to form.

CITY COUNCIL GOALS AND PRIORITIES:

This project works toward achieving the following City Council goals:

                     Maintain and Enhance the City’s Facilities, Equipment and Technology

                     Strengthen the Public’s Safety and Improve the Quality of Life

CONCLUSION:

Staff recommends the City Council:

1.                     Approve Amendment No. 7 to Agreement No. C-5-3612 between Orange County Transportation Authority (OCTA) and the City of Costa Mesa for the I-405 Improvements Project and authorize the Mayor and the City Clerk to execute the agreement.

 

2.                     Appropriate $1,989,000 in compensation towards the Pavement Mitigation I-405 Project.