Capitol Hill action on an economic stimulus bill has shifted to the Senate, which has begun to debate a package estimated at $888 billion. At least several days of discussion and amendments are expected. It appears that the Senate package's estimated $160 billion in construction-related spending is safe and that Democrats may seek to add more money for such infrastructure accounts as highways and Corps of Engineers water projects. Photo: AP Sen. Barbara Boxer favors increasing highway component of stimulus. Senate Environment and Public Works Committee leaders have stated that they favor tripling the $27-billion highway allocation that the proposal
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.