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The Big Dig was a megaproject in Boston that rerouted the then elevated Central Artery of Interstate 93 that cut across Boston into the O'Neill Tunnel and built the Ted Williams Tunnel to extend Interstate 90 to Logan International Airport. Those two projects were the origin of the official name, the Central Artery/Tunnel Project. Additionally, the project constructed the Zakim Bunker Hill Bridge over the Charles River, created the Rose Kennedy Greenway in the space vacated by the previous I-93 elevated roadway, and funded more than a dozen projects to improve the region's public transportation system. Planning for the project began in 1982; the construction work was carried out between 1991 and 2006; and the project concluded on December 31, 2007. The project's general contractor was Bechtel and Parsons Brinckerhoff was the engineer, who worked as a consortium, both overseen by the Massachusetts Highway Department.
The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, or the Eisenhower Interstate System, is a network of controlled-access highways that forms part of the National Highway System in the United States. The system extends throughout the contiguous United States and has routes in Hawaii, Alaska, and Puerto Rico.
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The Pennsylvania Turnpike, sometimes shortened to Penna Turnpike or PA Turnpike, is a controlled-access toll road that is operated by the Pennsylvania Turnpike Commission (PTC) in the Commonwealth of Pennsylvania in the United States. It runs for 360 miles (580 km) across the state, connecting Pittsburgh in Western Pennsylvania with Philadelphia in eastern Pennsylvania, and passes through four tunnels as it crosses the Appalachian Mountains in central Pennsylvania.
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Interstate 77 (I-77) in the US state of West Virginia is a major north–south Interstate Highway. It extends for 187.21 miles (301.29 km) between Bluefield at the Virginia state line and Williamstown at the Ohio state line.
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Interstate 75 (I-75) is a part of the Interstate Highway System that runs from the Hialeah–Miami Lakes border, a few miles northwest of Miami, to Sault Ste. Marie in the Upper Peninsula of Michigan. I-75 begins its national northward journey near Miami, running along the western parts of the Miami metropolitan area before traveling westward across Alligator Alley, resuming its northward direction in Naples, running along Florida's Gulf Coast, and passing the cities of Fort Myers, Punta Gorda, Venice, and Sarasota. The freeway passes through the Tampa Bay area before turning inward toward Ocala, Gainesville, and Lake City before leaving the state and entering Georgia. I-75 runs for 471 miles (758 km) in Florida, making it the longest Interstate in the state and also the longest in any state east of the Mississippi River. The Interstate's speed limit is 70 mph (110 km/h) for its entire length in Florida.
There are approximately 25 current toll roads in the state of Texas. Toll roads are more common in Texas than in many other U.S. states, since the relatively low revenues from the state's gasoline tax limits highway planners' means to fund the construction and operation of highways.
References
- ↑ Central Artery/Tunnel Project Website Archived 2007-10-12 at the Wayback Machine
- ↑ "Boston's 'Big Dig' finally opens to public - US news - NBC News". NBC News. 21 December 2003.
- ↑ "I-5 - SR 16 Tacoma/Pierce County HOV Program | WSDOT".
- ↑ Jaffe, Eric (2015-10-13). "From $250 Million to $6.5 Billion: The Bay Bridge Cost Overrun". CityLab. Archived from the original on 2017-09-28. Retrieved 2017-09-28.
- ↑ Turnpike panel says high costs imperil Mon-Fayette, Southern Beltway projects, Pittsburgh Post-Gazette, April 27, 2007
- ↑ Louisville Bridges Cost Now $4.1 Billion, The Urbanophile, October 6, 2007
- ↑ HRBT Expansion website
- ↑ Federal Highway Administration, Central Texas Turnpike Fact Sheet
- ↑ "So what is the capacity of the Katy Freeway these days?".
- ↑ "FHWA Office of Innovative Program Delivery: Project Profiles". Archived from the original on 2015-09-05. Retrieved 2015-09-18.
- ↑ Maryland Department of Transportation ICC Website
- ↑ Woodrow Wilson Bridge Replacement Website Archived 2007-10-15 at the Wayback Machine
- ↑ Tracy, Dan (17 February 2015). "I-4 Ultimate overhaul gets ceremonial start". Orlando Sentinel. Retrieved 18 February 2015.
- ↑ "INDOT I-69: I-69".
- ↑ "Frequently Asked Questions". Wekiva Parkway. Florida Department of Transportation & Central Florida Expressway Authority. Retrieved 18 February 2015.
- ↑ COG panel OK with $498M spike in Q bridge cost, New Haven Register, August 9, 2007 [ permanent dead link ]
- ↑ "Final leg of E-470 nears completion". Denver Business Journal.
- ↑ Webber, Melvin (1976). "The BART experience: what have we learned?" (PDF): 93. Retrieved 31 May 2016.
{{cite journal}}: Cite journal requires|journal=(help)[ permanent dead link ] - ↑ "Frequently Asked Questions about the Transcontinental Railroad".
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