|
The Confusion Hill Bridges (aka. Confusion Hill Realignment, Confusion Hill Bypass or South Fork Eel River Bridges) are a pair of high bridges carrying two lanes of U.S. Route 101 over the South Fork Eel River in Mendocino County in the U.S. state of California. The bridges were constructed to reroute approximately 〔Length is an estimate between two lengths given by Caltrans - 1.5 mi and 1.9 mi〕 of the highway away from a massive landslide area on the south bank of the river. The north bridge was finished in July 2009 and the south bridge completed in September 2009; the whole bypass was officially opened to traffic in October of that year.〔 〕 ==History== The Confusion Hill realignment bypasses the "Confusion Hill slide", a reach of unstable hillside about long and wide. Prior to the realignment this slide would shift during heavy rains, causing damage to the roadway and delays to traffic. The bridges were designed by the California Department of Transportation (Caltrans), and the contractors were MCM Construction Inc. and the Finley Engineering Group. The north bridge was begun on July 26, 2006 and it was completed in November 2008. Before the south bridge was finished, the north bridge was used to carry construction debris out of the realignment site on the opposite bank. The south bridge was begun in November 2006 and its two piers were completed by November 2008. While the north bridge was opened in July 2009, the south bridge, which was also finished in July 2009, was opened in September 2009 and the Confusion Hill Realignment project was completed in October 2009. The total cost of this project is estimated at $67 million.〔 The bridges are collectively named after the nearby roadside attraction Confusion Hill. The two individual bridges were named after two pioneers, Elizabeth Jane Rosewarne and Mignon Stoddard Lilley.〔 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「Confusion Hill Bridges」の詳細全文を読む スポンサード リンク
|