In the face of opposition from the Obama administration, House Transportation and Infrastructure Committee leaders have unveiled major elements of a $500-billion surface transportation bill that would carry highway, transit and rail programs through the next six years and restructure Dept. of Transportation programs. Related Links: DOT's LaHood Seeks SAFETEA-LU Extension Other ENR SAFETEA-LU Coverage The proposal would represent about a 50% boost over funding for the past six years, but it doesn't specify where the additional money would come from. It also must contend with a radically different counter-proposal from Transportation Secretary Ray LaHood, who has called for an
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.