Colorado River Bridge
(USA)
The Japan Association of Civil Engineering Tanaka Award 2010 /
PC Technology Association Award for Project Category 2010 /
American Society of Civil Engineering OCEA Award 2012
The Colorado River Bridge was constructed as a bypass bridge for US93 highway which passes through the Hoover Dam. In order to reduce the overall weight of the structure and to minimize the change to the landscape terrain, twin arch structure with parallel arch ribs was adopted for the main bridge. To improve the windproof durability of the bridge, the concrete arch was integrated with steel struts. Such integration technology is the first of its kind to be adapted in the world. Four U-shaped steel girder applied for the superstructure along with the reinforced concrete slab. The pier section and the vertical part on the spandrel section was constructed out of pre-casted concrete manufactured through the match cast method. As for the vertical, the maximum vertical height on the skew back is approximately 87m. The arch ribs concrete sections are casted in situ and constructed through the stay-cable method by using a temporary pylons. Bridge consists of 4 lanes and one sidewalks on the side overlooking Hoover Dam.
| Project Site | Nevada, Arizona, United States |
|---|---|
| Completion Year | 2010 |
| Client | Federal Highway Administration |
| Specifications | Bridge Length: 578m Span Length: 323m Width: 27m Arch Rib: Parallel Single Chambered Box Girder Pier and Vertical: Dual Pillar Type Precast Hollow Column |
| Construction Method | Concrete Arch |