The U.S. Dept. of Transportation has formally obligated $590 million in stimulus-act funds to the Washington DOT, clearing the way for projects to improve passenger rail infrastructure in that state. The Feb. 26 announcement follows an agreement between the Federal Railroad Administration and Washington DOT regarding the release of the federal aid and a separate pact among Washington DOT, BNSF Railway, which owns the track, and Amtrak, which operates the trains, on a spending plan and rail service benchmarks. The federal aid will go for projects that include bypass tracks and upgrades to track and signal systems on the Washington
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.