A new team is taking over at the Federal Highway Administration, as debate heats up about the Highway Trust Fund’s problems and legislation to reauthorize surface transportation programs. The Senate on July 10 confirmed former Arizona Dept. of Transportation Director Victor M. Mendez as FHWA administrator. Mendez served as ADOT’s director from 2001 until February 2009.
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.