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Columbia River Crossing : ウィキペディア英語版 | Columbia River Crossing
The Columbia River Crossing (CRC) was a joint freeway megaproject from 2005 to 2013 between Oregon and Washington, which proposed to widen and modernize Interstate 5 where it crossed the Columbia River. Central to this was the replacement of the Interstate Bridge, a pair of through-truss bridges. The northbound bridge dates to 1917, and its nearly identical companion was opened in 1958 to carry southbound traffic. The bridges, the earlier of which pre-dates the U.S. Highway System by nine years, served as the crossing for U.S. Route 99 before the establishment of the Interstate Highway System and Interstate 5 as the new route number. Each of the current bridges currently has three traffic lanes and no emergency lanes. Each bridge also has a vertical-lift draw bridge span on the Washington State side of the river to allow shipping traffic access upriver. The CRC was intended to be a safer, more modern bridge, with greater capacity, including light rail to directly connect with the regional MAX system. It would also have replaced or modified seven freeway interchanges south of SR-500. "Project partners" included the Federal Highway Administration and the Federal Transit Administration, cities of Vancouver and Portland, the Southwest Washington Regional Transportation Council, Metro, and transit agencies C-Tran and TriMet. Other agencies were involved as part of "task forces," but the project was seemingly terminated in July 2013 by Republican opposition within the Washington State Senate. ==Proposal== A draft environmental impact statement (EIS) was published in May 2008, with a final EIS published in the Federal Register on September 23, 2011. While first said to begin in 2010, the CRC team later said construction would not begin until late 2014. The EIS was produced at a cost of $105 million, over five times the original estimate, and was delivered 18 months behind schedule. The ongoing project planning costs $1 million per month. Planners say the construction phase would last five to seven years. Official cost estimates for a phased build-out were $2.8 billion, down from earlier estimates of $3.5 billion. The CRC finance plan called for tolling to pay for up to $1.3 billion of the cost.
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「Columbia River Crossing」の詳細全文を読む
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