BigDigSlides(2)

BigDigSlides(2) - A Systems Analysis of The Big Dig April...

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A Systems Analysis of The Big Dig April 26, 2011 CEE 3000-B Group 5 Samuel Bihon Stephen Ennis Mindy Kao Xingjian Liu Natalie Nora Alan Shirley 1
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Overview Background Information Purpose Functional Characteristics Linkages of the System Performance Measures Cost/Benefit Analysis Sustainability Analysis 2
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Background Information (1) The Big Dig is in Boston, Massachusetts I-93 runs north from Boston through New Hampshire. I-90 runs from Seattle, WA to Boston, MA. 3 I-93 I-90 United States East Coast Boston, Massachusetts http://geology.com/world/the-united-states-of-america-map.gif
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Background Information (2) Central Artery (I-93) carried both north-south and east-west traffic Traffic from west of Boston had to travel on portions of Central Artery to reach Callahan and Sumner tunnels Route also entailed driving on city streets 4
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Background Information (3) Designed to carry 75,000 vehicles per day in 1959; carrying 200,000 by the 1990s In 1990 there was 10 hours of traffic congestion per day By 2010 there was expected to be over 16 hours of traffic Boston traffic on the old elevated highway http://www.bostoncondogroup.com/blog/2007/01/condo-living-on-bostons-new-greenway.html 5
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Purpose To reduce congestion on I-93 To replace to deteriorating Central Artery To bring more green space to Boston To reconnect downtown Boston to the waterfront 6
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Functional Characteristics (1) Traffic After Traffic Before Old Elevated Central Artery S u m n e r T l C a h New Underground Central Artery Ted-Williams Tunnel Leonard P. Zakim Bunker Hill Memorial Bridge http://en.wikipedia.org/wiki/File:Boston-big-dig-oldtraffic.png http://en.wikipedia.org/wiki/File:Boston-big-dig-newtraffic.png 7 Leverett Circle Leverett Circle Connector Bridge I-90 Extension
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Functional Characteristics (2) Ted Williams Tunnel First completed milestone
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BigDigSlides(2) - A Systems Analysis of The Big Dig April...

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