URS Corp., San Francisco, is moving the headquarters of its Washington division from Boise, Idaho, to Denver by the end of 2010, according to industry sources. The Washington division is the latest incarnation of the legendary Morrison Knudsen Corp., which started in Boise and is best known for building the Hoover Dam, the Kennedy Space Center and the trans-Alaska pipeline. The Idaho office currently employs 500 people.
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.