Item 18 - Construction Contract for Traffic Signal Improvements Projects

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Construction Contract for Traffic Signal Improvement Projects November 4, 2025 Page 2 DISCUSSION The Public Works Agency Engineering Services Division (PWA) is responsible for the administration and oversight of all Capital Improvements Projects (CIP) in the City. With the adoption of the fiscal year 2024-25 budget, the City Council allocated funds for traffic safety improvements at the intersections of Segerstrom Avenue and Raitt Street, Segerstrom Avenue and Flower Street, and Edinger Avenue and Towner Street. The traffic safety improvements will modify existing traffic signals and install a new pedestrian hybrid beacon to enhance safety and increase mobility for those traversing the intersections. At Segerstrom Avenue and Raitt Street and Segerstrom Avenue and Flower Street, the improvements will include installation of new left turn arrows to separate the turning vehicle movements from opposing vehicles, pedestrians, and bicyclists eliminating the potential for conflict. In addition, high visibility crosswalks and audible pedestrian signals (APS) will be installed to enhance visibility of crossing pedestrians and bicyclists at the intersection. The complete scope of work includes installation of new traffic signal poles, conduit, fiber optic cable, video detection system, APS system, emergency vehicle detection, signing and striping, and wheel chair ramps. At Edinger Avenue and Towner Street, the improvements will install a new pedestrian activated flashing beacon that will provide a controlled crossing for pedestrians to safely cross the intersection. Additionally, high visibility crosswalks with APS will be installed to enhance visibility of crossing pedestrians and bicyclists at the intersection. The complete scope of work includes installation of new traffic signal poles, conduit, fiber optic cable, video detection system, APS system, signing and striping, and wheel chair ramps. While General Funds have been allocated to fully fund these projects, an existing memorandum of understanding (MOU) with Irvine and recently approved development projects in the area will contribute to the cost of the improvements. These contributions will be collected at a later date in accordance with the respective agreements and traffic study mitigation requirements. The city of Irvine reclassified part of Redhill Avenue and went through the Master Plan of Arterial Highway amendment process. As part of this process, a traffic study identified a traffic impact to the intersection of Segerstrom Avenue & Flower Street. An MOU with the city of Irvine and Orange County Transportation Authority (OCTA) was approved by the City Council on July 1, 2025. As part of this MOU, Irvine will contribute $37,224 to this project. The MOU is currently being circulated by Irvine and OCTA for final signatures. Once fully executed, Staff will coordinate with Irvine to obtain the funding contribution. As part of the entitlement process for both the Bristol Related and the Village development projects, their respective operational traffic studies identified operational