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![]() The table below compares the "Engineering and Construction" features of the three alternatives. Clicking on the name of the alternative will take you to a simulated illustration of that alternative as well as a brief description of it. Finally each description also links to a page with a CAD profile. |
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Cost* | Construction Duration |
Bridge Length | Bridge Elevation | Recommended Bridge Types | Other |
Gold Strike Canyon | $215 million | 5-6 years | 1,700 feet | 100 feet lower than Hoover Dam | Concrete deck arch, steel deck arch | Poorest roadway geometrics, most difficult roadway construction, least disturbance to traffic during construction |
Promontory Point | $204 million | 5 years | 2,200 feet | 230 feet higher than Hoover Dam | Steel suspension, concrete cable-stayed, steel truss rib-through arch | Most complex bridge design & construction |
Sugarloaf Mountain | $198 million | 5 years | 1,900 feet | 250 feet higher than Hoover Dam | Steel deck arch, concrete cable-stayed | Best roadway geometrics, requires relocation of 4 transmission towers |
* In 2002 dollars and includes engineering and construction.
![]() One possible bridge type: Steel Arch Click here for profile.
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![]() One possible bridge type: Steel Suspension Click here for profile.
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![]() ![]() Sugarloaf Mountain Alternative would cross the Colorado River about 1,500 feet downstream of Hoover Dam. The new highway would begin about 1,000 feet east of the Goldstrike Casino, following a route just south of existing U.S. 93 to the Reclamation warehouse area. It would then curve to the southeast and cross the new bridge perpendicular to the Colorado River. The highway would tie into existing U.S. 93 at milepost 2 in Arizona. One possible bridge type: Steel Arch Click here for profile.
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