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<br /> <br /> <br /> <br /> REQUEST FOR <br /> <br /> COUNCIL ACTION <br /> <br /> CITY COUNCIL MEETING DATE: CLERK OF COUNCIL USE ONLY: <br /> <br /> NOVEMBER 15, 2010 <br /> TITLE APPROVED <br /> <br /> REQUEST FOR PROPOSALS FOR ? As Recommended <br /> CONSTRUCTION MANAGEMENT E3 Amended <br /> [I Or dinance on 1St Reading <br /> SERVICES FOR THE FIRST STREET ? Ordinance on 2"d Reading <br /> BRIDGE REPLACEMENT OVER THE ? Implementing Resolution <br /> SANTA ANA RIVER ( 061723) ? Set Public Hearing For <br /> CONTINUED TO <br /> ?~v~CcG,~---- FILE NUMBER <br /> CITY MANAGER <br /> <br /> RECOMMENDED ACTION <br /> <br /> Authorize the Public Works Agency to send Request for Proposals to qualified consulting firms to <br /> provide construction management services for the First Street Bridge Widening over the Santa <br /> Ana River project. <br /> <br /> DISCUSSION <br /> <br /> The First Street Bridge over the Santa Ana River currently consists of two travel lanes in each <br /> direction but the street leading onto the bridge has three lanes. During rush hour, the bridge <br /> becomes a bottleneck that severely impedes traffic flow. To improve the situation, plans and <br /> specifications have been prepared to widen the bridge to three lanes in each direction with <br /> pedestrian sidewalks on both sides. <br /> <br /> The proposed work includes demolishing the existing bridge and rebuilding the new bridge from <br /> the foundation up. Field investigation indicated that the east/west bound bridge consists of two <br /> independent structures, which are structurally separated along the longitudinal center line. In light <br /> of this finding, the widening work will be conducted in two phases. In the first phase, traffic will be <br /> directed to the south half of the bridge while the north half will be demolished and rebuilt. The <br /> second phase of the project will start immediately following completion of the first phase. Traffic in <br /> this phase will be directed to the newly completed north half of the bridge during rebuilding of the <br /> south half. <br /> <br /> The construction cost is estimated at $10.5 million. The award of a construction contract is <br /> expected to take place in March 2011. Construction is expected to last for 12 months and during <br /> this time, traffic will be reduced to one lane for each direction. To mitigate the impact, changeable <br /> message signs will be set up prior to construction, alerting drivers to use alternate streets. Traffic <br /> signal timing will also be reset according to the traffic volume. <br /> Bridge construction is a highly specialized field. To ensure safe and high quality construction, staff <br /> recommends retaining a construction management firm with experience in bridge work to manage <br /> <br /> 19G-1 <br />