Bridges to Prosperity McNary Bergeron

PROJECT HIGHLIGHTS: HOOVER DAM BYPASS (COLORADO RIVER BRIDGE)

Since its completion in 1936, Route U.S. 93 over Hoover Dam has served as a major transportation corridor. In those 70 years, increased traffic volume combined with the large number of pedestrian visitors at the dam has necessitated a bypass route. The new Colorado River Bridge, just down-stream of the dam, will carry traffic 900 feet above the river avoiding the sharp turns and narrow roadway leading to the dam.

Our Role

McNary Bergeron & Associates provided construction engineering services for the arch construction. This includes the structural design for the temporary stay cable system (anchorages, towers and cable connections at the arch ribs) as well as arch rib shop drawings and an independent review of the formtraveler design.

Construction Method and Specifications

- Precast segmental columns, Maximum height = 287 ft
- Cast-in-place segmental concrete arch, Main Span = 1060 ft
- Arch construction using temporary stay cable system

Owner

FHWA Central Federal Lands Highway Division (CFLHD)

Contractor

Obayashi / PSM (Joint Venture)

Designer

TYLin / HDR

CONSTRUCTION PRESENTATION

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Total Contract Value

$114 million

Timeline

Fall 2001 to Winter 2010

Data Sheet (pdf)

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