In a special session on July 2, the Texas Legislature refused to extend the authority of the Texas Dept. of Transportation to build privatized toll roads in agreements with private developers. The refusal comes at the end of a two-year moratorium on private toll-road construction passed in 2007. It is a setback for Gov. Rick Perry (R), who had appointed a Legislative Study Committee on Private Participation in Toll Projects. One member, Bob Poole, director of transportation policy for Los-Angeles-based Reason Foundation, says the committee’s 2008 report concluded the state needs tolling and private capital, although rules should be modified
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.