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New and Future Bridges

机译：新的和未来的桥梁

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An era of great bridge building in America ended with the 1930s, when the George Washington, Golden Gate, San Francisco-Oakland Bay and other structurally significant but lesser known bridges were completed. The first two had record-setting main suspension spans of 3,500 and 4,200 feet, respectively, whereas the third, at 75 million Depression dollars, was the most expensive bridge project to date. The decade also saw the completion in 1931 of the Bayonne Bridge, at 1,652 feet then the longest arch bridge in the world, bettering, but only by 2 feet, the more well-known Sydney Harbour Bridge, completed the following year. The Bayonne, which connects New York's Staten Island with New Jersey, also won the American Institute for Steel Construction's award for most beautiful bridge, beating out the George Washington in the 1931 competition. (The Bayonne held the record for the world's largest steel-arch bridge until 1977, when the New River Gorge Bridge near Fayetteville, West Virginia, was completed with a span of 1,700 feet.) The 1930s also marked the completion of some of the most distinctive Oregon Coast bridges (see Engineering May-June 1996) and many other familiar landmarks in the American highway infrastructure.
机译：美国的大型桥梁建设时代始于1930年代，当时乔治·华盛顿，金门大桥，旧金山-奥克兰湾和其他结构上重要但鲜为人知的桥梁建成。前两个桥的主悬架跨度分别创纪录，分别为3500英尺和4200英尺，而第三个桥的悬吊跨度为7500万美元，是迄今为止最昂贵的桥梁工程。十年间，Bayonne大桥于1931年完工，当时世界上最长的拱桥的高度为1,652英尺，但改善得更好，但第二年（更著名的悉尼海港大桥）仅完工了2英尺。连接纽约州史坦顿岛和新泽西州的巴约讷机场还赢得了美国钢结构协会最美桥梁奖，在1931年的比赛中击败了乔治·华盛顿。 （巴约讷保持了世界上最大的钢拱桥的记录，直到1977年，西弗吉尼亚州费耶特维尔附近的新河峡大桥以1,700英尺的跨度完工。）1930年代也标志着一些最大的钢拱桥的建成。美国高速公路基础设施中独特的俄勒冈海岸大桥（请参阅1996年5月至6月的工程学）以及许多其他熟悉的地标。

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