Laserfiche WebLink
TVTC 2009 Strategic Expenditure Plan Update <br /> Updated Project Descriptions August 4, 2009 <br /> B -1. I -580/1 -680 Interchange (Westbound to Southbound) <br /> CIs i TVTC Project Sponsor: <br /> r ry s i C of Dublin <br /> 4 1 Lead Agency: <br /> T <br /> s s L y Alameda County Congestion <br /> y s Management Agency <br /> a <br /> m y Other Involved Parties: <br /> r �s <br /> Caltrans, City of Pleasanton <br /> a <br /> 1 i <br /> e}A .s' Project Description: <br /> els is Y f The project is located at the I- <br /> f <br /> 7,.) 'F y�� r 580/I -680 Interchange in Alameda <br /> i ��.a County. The proposed project <br /> limits are from 1700 LF east of the <br /> Hacienda Drive Overcrossing (PM 18.50) to 2000 LF west of the San Ramon Road Overcrossing <br /> (PM 21.81) along 1 -580, and from the Amador Valley Boulevard Undercrossing (PM 20.73) to <br /> 3400 LF south of the Stoneridge Drive Overcrossing (PM 19.94) along I -680. <br /> Three project alternatives have been identified as discussed below. <br /> Alternative 1. This alternative would provide a mixed -flow lane direct connection from <br /> westbound I -580 to southbound I -680 and a combined westbound I -580 to southbound I -680 <br /> and northbound I -680 to eastbound I -580 HOV lane direct connection. It would also <br /> construct an express bus lane from the East Dublin/Pleasanton BART station to eastbound <br /> 1 -580. The estimated cost for this alternative in current 2008 dollars is $760 million. <br /> Alternative 2. This alternative would provide a combined mixed -flow lane and HOV lane <br /> direct connection from westbound I -580 to southbound I -680 and a northbound I -680 to <br /> eastbound I -580 HOV lane direct connection. It would also construct an express bus lane <br /> from the East Dublin/Pleasanton BART station to eastbound 1 -580. The estimated cost for <br /> this alternative in current 2008 dollars is $640 million. <br /> Alternative 3. This alternative would provide a mixed -flow lane direct connection from <br /> northbound I -680 to westbound I -580, and remove the northbound I -680 to westbound I -580 <br /> loop ramp connection. It would also construct an express bus lane from the East <br /> Dublin/Pleasanton BART station to eastbound 1 -580. Alternative 3 would provide a <br /> potentially fundable early phase to planned ultimate improvements to the 1 -580/1 -680 I/C <br /> within the foreseeable future. The estimated cost for this alternative in current 2008 dollars <br /> is $400 million. <br /> Status: <br /> A Project Study Report (PSR) is complete and awaiting final approval from Caltrans. The next <br /> steps toward completion of the project include: <br /> Kitnley -Horn and Associates, Inc. Page 18 <br />