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HomeMy WebLinkAboutItem 2g: Accept Work by Christopher Morales for Traffic Signal Modification ProjectPLiFOR14 Inenrpur .eJ Auyu.l 5, IvUI C~ STAFF REPORT Development Services Department DATE: October 6, 2009 TO: Mayor and City Council FROM: Jason Kruckeberg, Development Services Director 5LK Philip A. Wray, Deputy Director of Development Services/City Engineer , N ) Prepared by: Ramiro Gonzalez, Assistant Engineer SUBJECT: ACCEPTANCE - TRAFFIC SIGNAL MODIFICATION PROJECT AT HUNTINGTON DRIVE AND FIRST AVENUE AND SANTA ANITA AVENUE AND SANTA CLARA STREET Recommendation: Accept all work performed by Christopher Morales, Inc., as complete and authorize the final payment to be made in accordance with contract documents SUMMARY The City Council awarded a contract to Christopher Morales, Inc. in the amount of $99,900 on May 5, 2009 to modify the traffic signals at the intersections of Huntington Drive and First Avenue and at Santa Anita Avenue and Santa Clara Street. There was one change order in the amount of $9,727.41 which increased the contract amount to $109,624.41. The terms and conditions of this project have been completed and the required work has been performed to staff's satisfaction for a final cost of $109,624.41. Staff is recommending that the City Council accept the project as complete and authorize the final payment in accordance with the approved contract documents. BACKGROUND The project is part of an ongoing program to upgrade and improve City traffic signals to improve traffic safety, reduce maintenance cost and improve aesthetics. Following the guidance of the City Council, staff undertook a study of intersections in need of traffic safety improvements. A list of candidate intersections capable of sustaining protected/permissive left turns (PPLT) was prepared and investigated as to whether PPLT traffic signal warrants could be met. Staff Report Acceptance - Traffic Signal Modification Project October 6, 2009 Page 2 A warrant investigation conducted by the Development Services Department/ Engineering Division determined that these two intersections were ideally suited to receive PPLT installations. At the intersection of Santa Anita Avenue and Santa Clara Street, the installation of north/south PPLT phasing and the installation of a video detection system was warranted. At the intersection of Huntington Drive and First Avenue, the installation of east/west PPLT phasing was also warranted. The installation of PPLT phasing improves traffic safety, traffic signal operations, and enhances public convenience. PPLT's are installed at intersections with no left turn signals and where there are an insufficient number of gaps in the opposing traffic lanes to accommodate left turns. PPLT's reduce driver annoyance, congestion and improve intersection capacity by improving traffic flows. Various factors such as turning movement, collision history, volumes, speed, surrounding land use, and intersection geometrics were used to make the determination that those improvements were warranted. Video detection systems offer a broad range of traffic management applications. The vehicle detection loops on the video screen replace the in-pavement loops as the detection mechanism to communicate with the traffic controllers, and the video feed can be transmitted to remote locations for other uses. Video detection systems are superior to in-ground traffic loops because they are not impacted by pavement conditions or whether factors. The City's goal is to eventually replace all in-ground traffic loops with video detection systems as funding is available. DISCUSSION The installation of a PPLT at both intersections consisted of the installation of new mast arm traffic signal poles, three and five section vehicle signal light heads, pedestrian signals, new wiring, load switches, and detector amplifiers in the controller cabinet. Modifications to the traffic signal programming were made to accommodate the additional left turn phases. The installation of the video detection system included mast arm mounted video cameras, wiring and video amplifiers. Necessary signage for the left turns was installed as well as ADA compliant pedestrian pushbuttons. One change order in the amount of $9,727.71 (9.7% of the contract bid) was necessary when an abandoned traffic signal pole foundation was discovered at the location for one of the new traffic signal mast arm poles at the southwest corner of Santa Anita Avenue and Santa Clara Street. The change order included the cost of erecting a temporary traffic signal pole and the removal of the abandoned foundation. Staff Report Acceptance - Traffic Signal Modification Project October 6, 2009 Page 3 FISCAL IMPACT A total of $110,000 in Redevelopment funds was budgeted in the 2008-2009 Capital Improvement Program for these projects. No other expenses were incurred on this project. RECOMMENDATION That the City Council accept all work performed by Christopher Morales, Inc., for the Traffic Signal Modification Project at Huntington Drive and First Avenue and Santa Anita Avenue and Santa Clara Street as complete and authorize the final payment to be made in accordance with contract documents. Approved by: Donald Penman, City Manager JK:RS:PAW:RSG:pa