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ADOPT RESOLUTION TO AWARD A PROFESSIONAL SERVICES CONTRACT FOR THE AIRPORT WAY AND SIXTH STREET TRAFFIC SIGNAL INSTALLATION AND SYNCHRONIZATION PROJECT
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RECOMMENDATION
It is recommended that the City Council adopt a resolution to:
1. Transfer funds in the amount of $28,503 from the Grant Match, Project No. WT21016, to the Airport Way and Sixth Street Traffic Signal Installation and Synchronization, Project No. WT25040/Federal Project No. CRPL-5008(217).
2. Approve findings pursuant to Stockton Municipal Code section 3.68.070 in support of an exception to the competitive bidding process.
3. Award a Professional Services Contract to Siegfried Engineering, Inc. of Stockton, CA, in the amount of $215,000 for design of the Airport Way and Sixth Street Traffic Signal Installation and Synchronization, Project No. WT25040/Federal Project No. CRPL-5008(217).
It is also recommended that the City Manager be authorized to take appropriate and necessary actions to carry out the purpose and intent of this resolution.
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Summary
The Airport Way and Sixth Street Traffic Signal Installation and Synchronization project will install a traffic signal at Airport Way and Sixth Street and synchronize the signals along Airport Way between Dr. Martin Luther King Jr. Boulevard and Arch Airport Road. The project was included in the 2025-30 Five-Year Capital Improvement Plan (CIP).
On November 5, 2025, the City advertised a Request for Proposals (RFP) for design of the Airport Way and Sixth Street Traffic Signal Installation and Synchronization, Project No. WT25040/Federal Project No. CRPL-5008(217). On November 26, 2025, three firms submitted proposals for this project. The Selection Committee evaluated the proposals and found Siegfried Engineering, Inc. to be the most qualified and highest ranked firm.
It is recommended that Council adopt a resolution transferring funds and authorizing the City Manager to execute a Professional Services Contract in the amount of $215,000 with Siegfried Engineering, Inc. It is anticipated that the design will be completed by December 2026.
DISCUSSION
Background
The Carbon Reduction Program and Congestion Mitigation and Air Quality Program (CRP/CMAQ) are federal programs that help fund projects that contribute to the attainment or maintenance of National Ambient Air Quality Standards. The intersection of Airport Way and Sixth Street currently has stop controls on Sixth Street (Attachment A). This intersection meets the warrants for a traffic signal and was ranked highly in the 2019’s in the Stockton Traffic Signal, Roundabout and Protected Left-Turn Phasing Priority Studies Report. In 2023, the City submitted a grant funding application to the CRP/CMAQ program in the amount of $1,492,150 to install a new traffic signal at Airport Way and Sixth Street, including traffic signal synchronization and other existing signals between Dr. Martin Luther King Jr. Boulevard and Arch Airport Road. Other improvements include new Americans with Disabilities Act compliant ramps, streetlights, and roadway resurfacing. The CRP/CMAQ funding application in the amount of $1,492,150 for design, construction, administration, and contingency cost was approved and the project was included in the 2025-30 Five-Year CIP.
The funding is administered by Caltrans. Staff submitted a federal funding allocation request from Caltrans in the amount of $220,000 to start design of the project. The City’s local match for design is $28,503. The combined federal and local funding amount for design is $248,503. Caltrans approved the allocation request and authorized start of design and administration. Separate authorizations are required as the project progresses to construction.
Present Situation
On November 5, 2025, the City advertised an RFP for design of the Airport Way and Sixth Street Traffic Signal Installation and Synchronization, Project No. WT25040/Federal Project No. CRPL-5008(217). On November 26, 2025, three proposals were received from the following firms:
• Siegfried Engineering, Inc. (Stockton, CA)
• Kimley-Horn and Associates, Inc. (Oakland, CA)
• Minagar & Associates, Inc. (Laguna Hills, CA)
The Selection Committee evaluated and ranked all proposals based on each firm’s understanding of work, experience with similar kinds of projects, staff qualifications and technical ability, project approach, and familiarity with federal transportation funding procedures.
Siegfried Engineering, Inc. received the highest ranking, based on the noted criteria, and was determined to be the most qualified firm for this project. Staff negotiated a fee in the amount of $215,000 with Siegfried Engineering, Inc. for design services.
It is recommended that Council adopt a resolution transferring funds and authorizing the City Manager to execute a Professional Services Contract in the amount of $215,000 with Siegfried Engineering, Inc. for design of the Airport Way and Sixth Street Traffic Signal Installation and Synchronization, Project No. WT25040/Federal Project No. CRPL-5008(217). It is anticipated that the design will be completed by December 2026.
Findings
Pursuant to Stockton Municipal Code (SMC) section 3.68.070, Council may approve findings which support an exception to the competitive bidding process. These findings include:
1. The City does not have sufficient staff resources to design this project.
2. The scope of design services requires an engineering firm experienced in the design of traffic signal and traffic signal synchronization.
3. Use of the RFP process is appropriate for this Professional Services Contract because it relies on the evaluation of professional qualifications and performance as the basis for selection of a vendor. Use of the criteria helps ensure selection of a vendor that will provide the highest quality professional service, which is in the public interest.
4. The City negotiated a contract following solicitation of competitive proposals in accordance with SMC section 3.68.070.A.3.
FINANCIAL SUMMARY
With the transfer of funds in the amount $28,503 from the Grant Match, Project No. WT21016, to the Airport Way and Sixth Street Traffic Signal Installation and Synchronization, Project No. WT25040/Federal Project No. CRPL-5008(217), there will be sufficient funding to award a Professional Services Contract in the amount of $215,000 to Siegfried Engineering, Inc. for the project.
Attachment A - Vicinity Map