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Below is a list of so-called megaprojects that are among the most expensive in U.S. history. ==Highways== The following list includes projects to build new highways or improve existing ones, including roadways, bridges, and tunnels. It includes only projects that are underway or completed. Additionally, projects with multiple independent segments (e.g., I-69 Indiana-Texas Extension, Trans-Texas Corridor) are not included, though individual segments may or may not make the list. Costs shown below exclude financing costs. } | Big Dig, Boston, Massachusetts |- | data-sort-value="2013" | 2002-13 | data-sort-value="6416000000" | $6.416 billion (est.)〔http://baybridgeinfo.org/faq〕 | data-sort-value="2013" | | data-sort-value="6416000000" | | data-sort-value= | | San Francisco–Oakland Bay Bridge East Span Replacement, San Francisco/Oakland, California |- | data-sort-value="2002" | 1988-2002 | data-sort-value="5000000000" | $5.0 billion 〔(Turnpike panel says high costs imperil Mon-Fayette, Southern Beltway projects, Pittsburgh Post-Gazette, April 27, 2007 )〕 | data-sort-value="2002" | | data-sort-value="5000000000" | | data-sort-value= | | Mon-Fayette Expressway, southwest Pennsylvania and northern West Virginia |- | data-sort-value="2020" | 2005–20 (est.) | data-sort-value="4100000000" | $4.1 billion (est.)〔(Louisville Bridges Cost Now $4.1 Billion, The Urbanophile, October 6, 2007 )〕 | data-sort-value="2020" | | data-sort-value="4100000000" | | data-sort-value="4100000000" | | Ohio River Bridges Project, Louisville, Kentucky, and southern Indiana |- | data-sort-value="2007" | 2001-7 | data-sort-value="3600000000" | $3.6 billion〔(Federal Highway Administration, Central Texas Turnpike Fact Sheet )〕 | data-sort-value="2007" | | data-sort-value="3600000000" | | data-sort-value= | | Central Texas Turnpike, area around Austin, Texas |- | data-sort-value="2011" | 2007-11 | data-sort-value="2570000000" | $2.57 billion〔(Maryland Department of Transportation ICC Website )〕 | data-sort-value="2011" | | data-sort-value="2570000000" | | data-sort-value= | | Intercounty Connector, Montgomery County, Maryland |- | data-sort-value="2008" | 1999–2008 | data-sort-value="2500000000" | $2.5 billion〔(Woodrow Wilson Bridge Replacement Website )〕 | data-sort-value="2008" | | data-sort-value="2500000000" | | data-sort-value= | | Woodrow Wilson Bridge Replacement, Washington, D.C., Northern Virginia, and southern Maryland |- | data-sort-value="2021" | 2015-21 | data-sort-value="2300000000" | $2.3 billion (est.) | data-sort-value="2021" | | data-sort-value="2300000000" | | data-sort-value="2300000000" | | I-4 Ultimate corridor reconstruction, Orlando, Florida |- | data-sort-value="2015" | 2012–15 | data-sort-value="4250000000" | $4.25 billion | data-sort-value="2015" | | data-sort-value="4250000000" | | data-sort-value= | | Alaskan Way Viaduct replacement tunnel, Seattle, Washington |- | data-sort-value="2018" | 2008–18 | data-sort-value="1800000000" | $1.8 billion〔(I-69 Indianapolis to Evansville Corridor Study )〕 (est.) | data-sort-value="2018" | | data-sort-value="1800000000" | | data-sort-value="1800000000" | | Interstate 69 Extension SIU #3, Evansville to Indianapolis, Indiana |- | data-sort-value="2021" | 2013-21 | data-sort-value="1600000000" | $1.6 billion (est.) | data-sort-value="2021" | | data-sort-value="1600000000" | | data-sort-value="1600000000" | | Wekiva Parkway, Orlando, Florida |- | data-sort-value="2016" | 2001–16 | data-sort-value="1400000000" | $1.4 billion〔(COG panel OK with $498M spike in Q bridge cost, New Haven Register, August 9, 2007 )〕 (est.) | data-sort-value="2016" | | data-sort-value="1400000000" | | data-sort-value="1400000000" | | I-95 New Haven Harbor Corridor Reconstruction, New Haven, Connecticut |- | data-sort-value="2003" | 1991–2003 | data-sort-value="1200000000" | $1.2 billion〔(Final leg of E-470 nears completion, Denver Business Journal, December 13, 2002 )〕 | data-sort-value="2003" | | data-sort-value="1200000000" | | data-sort-value= | | E-470, Denver, Colorado |- | data-sort-value="1937" | 1933-7 | data-sort-value="37000000" | $37 million | 1937 | data-sort-value="37000000" | $37 million | data-sort-value= | $}} | Golden Gate Bridge |- | data-sort-value="2028" | 2015-28 | data-sort-value="67600000000" | $67.6 billion (est.) | 2013 | data-sort-value="54900000000" | $54.9 billion | data-sort-value= | $}} (est.) | California High-Speed Rail, Phase 1, California |- | data-sort-value="1869" | 1863-9 | data-sort-value="124548691" | $124,548,691〔http://cprr.org/Museum/FAQs.html#Cost〕 | 1873 | data-sort-value="124548691" | $124,548,691 | data-sort-value= | $}} | First Transcontinental Railroad |- | data-sort-value= | 1956- | data-sort-value="425000000000" | $425 billion | 2006 | data-sort-value="425000000000" | $425 billion | data-sort-value= | $}} | Interstate Highway System |- | data-sort-value= | 2003-2008 | data-sort-value="1500000000" | $1.5 billion | 2001 | data-sort-value="2800000000" | $2.8 billion (2008)〔http://offthekuff.com/wp/?p=55761〕〔http://www.fhwa.dot.gov/ipd/project_profiles/tx_katyfreeway.aspx〕 | $3.1 billion | I-10 Katy Freeway Expansion (Interstate 10 in Texas) |} 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「List of most expensive U.S. public works projects」の詳細全文を読む スポンサード リンク
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