Eugene A. "Gene" Conti Jr., secretary of the North Carolina Dept. of Transportation since 2009, is fighting the battle for transportation funding on multiple fronts, including a role in a Federal Highway Administration pilot program that could enable tolls on the state's 182-mile stretch of Interstate 95 as a way to pay for upgrades.
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.