The Hoover Dam Bypass Bridge is the longest concrete-arch bridge in North America. The 300-foot precast/post-tensioned concrete columns supporting the roadway at either side of the arch are the tallest in the world, it’s the second-tallest bridge in North America and it’s one of the most technically challenging bridges ever constructed.
The director of engineering for the project was Dave Zanetell, a graduate of the Colorado School of Mines (my alma mater). He had to “knit two state governments, four federal agencies, five general contractors, and dozens of consultants into an effective unit.”
“Strung nearly 1,000 feet above the Colorado River, the 1,900- foot arch-bridge solves problems that stymied engineers for more than three decades.”
Read the full story of this project from the Colorado School of Mines Magazine.