Nevada Gov. Jim Gibbons (R) expects to receive $45 million in previously approved SAFETEA-LU funding from the Federal Railroad Administration for planning and environmental analysis of the first segment of a $12-billion magnetic-levitation rail line from Las Vegas to Primm, Calif. The 269-mile line from Anaheim, Calif., to Las Vegas would be capable of speeds of up to 310 mph. FRA has not confirmed the announcement.
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.