So we finally made it to the Hoover Dam. We were prepared to be impressed. And we were, when we saw this:
This is the new Hoover Dam Bypass; work started in 2005, it is scheduled to be finished in 2010. Then one will travel 840 feet (256 m) above the Colorado River on a four lane highway.
Two more closeups:
The Hoover Dam itself is a marvel of engineering, given the time it was built and the enormity of the task involved. But the new bypass is just overwhelming. Or WOW! With a well-deserved exclamation mark.