The U.S. Dept. of Transportation on July 14 held the last of six town-hall meetings to gather opinions about what the long-delayed successor to the Safe, Accountable, Flexible, Efficient Transportation Equity Act: a Legacy for Users, or SAFETEA-LU, should look like. For months, industry officials have been waiting for DOT to release its “principles” for a new multiyear bill. DOT officials heard views from a range of groups but didn’t announce the principles. One participant, American Highway Users Alliance CEO Greg Cohen, told ENR, “Hopefully [the meeting] will lead to no further delays on an administration principles document.” Since SAFETEA-LU
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.