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〕 |length= |width= |clearance= |below= |traffic= 40,000 (2008) |open= October 6, 1983 |closed= |toll= |map_cue= |map_image= |map_text= |map_width= |coordinates= }} The Hale Boggs Memorial Bridge (also known as the Luling-Destrehan Bridge) is a cable-stayed bridge over the Mississippi River in St. Charles Parish, Louisiana. It is named for the late United States Congressman Hale Boggs. The bridge was dedicated by Governor David C. Treen and Bishop Stanley Ott of Baton Rouge and opened to traffic on October 8, 1983 connecting Louisiana Highway 18 on the West Bank and Louisiana Highway 48 on the East Bank. The Hale Boggs Bridge was the third major cable-stayed bridge in the United States after the 1,255-foot John O'Connell Bridge of Sitka, Alaska (the United States' first vehicular cable-stayed girder spanned bridge) and the Pasco-Kennewick Bridge or Ed Hendler Bridge in Washington. In 1993 the Hale Boggs Bridge was incorporated into the newly completed Interstate 310 and was the first cable-stayed bridge to be added to the interstate highway system. Upon completion of Interstate 49, I-310 and the Hale Boggs Bridge will serve as a connection between I-49 and Interstate 10 on the western edge of metropolitan New Orleans. ==Design== The superstructure and West approaches of the Hale Boggs Bridge were designed by the prime consultant, Frankland and Leinhard of New York, NY (E. Stanley Jarosz, Vice-president & Chief Engineer, & Myron Lepkaluk, President). The James F. Lincoln Arc Welding Foundation recognized Jarosz's and Frankland & Leinhard's design achievement with a major award in the year the bridge was completed.〔Interview with E. Stanley Jarosz, 〕 The foundations of the main span and the East approaches were designed by Modjeski and Masters of Harrisburg, PA. Original construction was by a team headed by Williams Brothers Construction Co, Inc.〔(【引用サイトリンク】publisher=ite.org )〕 The Hale Boggs's design features an unpainted weathering steel towers and superstructure, an orthotropic steel box girder superstructure, and two planes of cables in a fan pattern. Weathering steel exhibits uniform oxidation or "rusting" that results in a uniform protective patina and reduces maintenance requirements. The bridge's weathered bronze color is intended to blend with the muddy waters of the Mississippi River. The prefabricated cables, the Swiss manufacturer of which was selected by Williams Brothers Construction Co., Inc.〔 featured a heavy polyethylene sheathing that began cracking even before installation, leading to moisture intrusion and cable deterioration. There were additional problems with rust and water leakage in the anchorages.〔 A project to replace the cables began in summer 2009. 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「Hale Boggs Memorial Bridge」の詳細全文を読む スポンサード リンク
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