
- 帖子
- 910
- 主题
- 5
- 精华
- 5
- 积分
- 1807
- 威望
- 1428 点
|
6#
发表于 2011-1-25 16:41
| 只看该作者
The Mike O'Callaghan – Pat Tillman Memorial Bridge, also known as the Hoover Dam Bypass, was the first concrete-steel composite arch bridge built in the United States, and includes the longest concrete arch in the Western Hemisphere. Opened on October 19, 2010, the bridge provides a crossing of the Colorado River for U.S. Route 93, linking the U.S. states of Nevada and Arizona 1,600 feet (490 m) downstream from the Hoover Dam. It is located approximately 30 miles (48 km) southeast of Las Vegas, Nevada. The bridge is the 2nd highest in the United States, behind Royal Gorge Bridge, at 840 feet (260 m) above the Colorado River. Built as part of the Hoover Dam Bypass Project, which successfully finished within budget at a cost of $240 million, the bridge portion cost $114 million (2010 USD)
2001年911之后,美国人成了惊弓之鸟。原来公路是直接经过胡佛大坝,现在出于安全考虑,在旁边新开了一条路,进入大坝的车都必须经过安全检查。Mike O'Callaghan – Pat Tillman Memorial Bridge,美国第一条钢筋混凝土拱形桥,也是西半球最长的混凝土拱形桥,2010年10月开通。 |
|