FacilitiesTransportation Highlights 2009 0512

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Report (PSR) was prepared to study the widening of Davis Street. Keith stated that the City purchased some properties in the area that were for sale in the event that some right of way is necessary for the project. Matt Todd presented the ACCMA's portion of the project calling for three miles of additional southbound HOV Lanes from Hegenberger Road to Marina Boulevard. In addition to the ACCMA and the City of San Leandro, project partners include Caltrans and the City of Oakland. New overcrossings will be built at Marina Boulevard and Davis Street to provide standard vertical clearance over 1-880. The ultimate design, as presented by ACCMA, includes widening of the Davis Street bridge and straightening the roadway approach to the bridge that eliminates the need for additional right of way. Widening Davis Street results in a longer pedestrian crossing at Warden/Timothy. One idea to meet this challenge is the construction of a pedestrian overcrossing. Keith presented a drawing of a potential pedestrian overcrossing. The I-880 HOV Lane project requires replacement of the sound wall along southbound I-880 at the Davis Street exit. Issues involved in its construction include the necessity to raise the current wall height by 8 feet. Construction of the retaining wall/sound wall will have an impact to several residential properties in the area. Potential solutions to these issues include modifying the southbound 1-880 Davis Street off -ramp profile, realigning Davis Street and constructing a new wall in front of the existing retaining wall/sound wall. The I-880- HOV Lane portion of the project will also include the widening of the bridge over the San Lorenzo Creek/Union Pacific Railroad crossing and new sound walls. Tim Lee of WMH added that the existing Davis Street bridge will be moved approximately 50 feet to the north. The bridge will remain open during construction using lane closures when needed. Currently, 35% of the design package is complete. An administrative draft environmental report as well as a draft project report is being prepared. The delivery strategy is to bid two construction packages — Marina Boulevard to Davis Street and North of Davis Street to Hegenberger Road. The project schedule calls for the completed environmental document in November 2009 and PS&E completion is scheduled for September 2010. Construction is expected to last 24 months beginning in 2011. Keith also presented the Marina Boulevard project summary and objectives. The I -Bond, passed in 2006, initiated the I-880 HOV Lane project. The project includes the proposed development of the Kaiser Hospital/Retail Center. An agreement was entered into with ACCMA in 2008 to design and construct a new Marina Boulevard interchange to improve traffic flow on Marina Boulevard and to accommodate expected increased traffic from the Kaiser Hospital/Retail Center. ACCMA's proposed design accommodates the City of San Leandro's preferred option. Similar to the Davis Street bridge, the Marina Boulevard overcrossing will, most likely, be moved approximately 50 feet to the north. Right of way may be necessary, however the goal is to keep all interchange improvements within the area of the existing interchange. The timetable for the Marina Boulevard project is scheduled to coordinate with the I-880 HOV Lane project. The Marina Boulevard PSR has a scheduled completion date of December 2009, with a construction start date (to be determined) that will coordinate with the HOV project. The Facilities and Transportation Committee Page 2 Meeting Highlights 5/12/09