House Transportation and Infrastructure Committee Chairman James Oberstar (D-Minn.) helped shape the infrastructure portions of what became last year's American Recovery and Reinvestment Act. He also was a key player in the Jobs for Main Street bill that the House passed in December and continues to push for his six-year, $500-billion highway-transit-rail reauthorization measure. In a one-on-one interview with ENR Washington Bureau Chief Tom Ichniowski Feb. 3 in the "T&I" committee's offices in the Rayburn House Office Building, Oberstar discussed the impact of the stimulus measure so far and the need for further legislation. ENR : Are you pleased with
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.