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smalpert011_show - The Cross-Bronx Expressway by Steve...

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The Cross-Bronx Expressway by Steve Alpert 1.011 Final Project, Spring 2003 1
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Overview Took longer to build than any other NYC highway planned after World War II Completed in 1964 (eastern Bruckner interchange completed in 1972) 16% cost overrun ($10.5 million in 1950 $); interchanges at each end cost as much as expressway between them Critical link in Interstate highway system as well as essential corridor for commuters, through traffic, and commercial vehicles 175,000+ vehicles per day on I-95 section (25% trucks) 2
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Risks and Uncertainty Opposition (will the community say no?) Time (will it be built near schedule?) Usefulness (will pieces of the highway be stranded with no connections?) Materials (will they delay construction by being unavailable? or will their cost be a major issue?) Fatalities (what can go wrong on the jobsite?) 3
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Cost-Benefit Analysis Benefits Interstate Highway freeway link (good for trucks) Fewer delays, more capacity than surface streets New buildings, improvements near expressway Costs Split neighborhoods in half, families displaced Overruns due to slow progress, social/political problems No room to widen expressway for current needs 4
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Discount rate: 10.00% Interest rate: 5.00% Total costs (1950 $): 40.911 million $ Costs (million $) 1954 worth: 86.278 million $ YEAR right of way (ROW) acquis- ition, planning materials construc- tion pavement demolition/ relocation labor/ testing total cost for year cumulative cost (adjusted for inflation) 1950 total worth 1945 0.48 0 0 0 0 0 0.480 0.627 0.613 1946 0.48 0 0 0 0.04 0 0.520 1.235 0.563 1947 0.48 0 0 0 0 0 0.480 1.715 0.409 1948 0.48 2.4 0.211 0 0 0.2 3.291 4.094 2.284 1949 0.24 6.45 9.451 0.4 0 2.625 19.166 17.280 12.697 1950 0 0.8 6.013 3.717 0 1.665 12.196 25.673 7.322 1951 0.16 0 0 2.808 0.120 0.26 3.348 28.698 1.694 1952 5 0 0 0.64 1.947 0.08 7.667 33.581 3.389 1953 0.15 0 0.444 1.92 0.243 0.41 3.167 36.675 1.386 1954 1.1 1 2.105 2.16 0.1 0.75 7.215 41.201 2.631 1955 0 0 0.550 2.38 0.76 0.35 4.040 44.655 1.354 1956 0.72 0 0 0 0 0 0.720 47.107 0.214 1957 0.72 0 0 0 0 0 0.720 49.655 0.189 1958 0.84 0 0 0 0 0 0.840 52.337 0.194 1959 0 4.75 4.524 3 0 0.87 13.144 57.796 2.768
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This note was uploaded on 11/29/2011 for the course CIVIL 1.00 taught by Professor Georgekocur during the Spring '05 term at MIT.

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smalpert011_show - The Cross-Bronx Expressway by Steve...

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