Florida state lawmakers and Congress members are racing to retain $2.4 billion in federal stimulus dollars committed to build high-speed rail, while other states await the opportunity to gain those dollars that Gov. Rick Scott (R) rejected this month. + Image The funds represent 90% of what the Florida Dept. of Transportation says is needed to build a line from Orlando to Tampa. The governor cited concerns about potential capital cost overruns, optimistic ridership and revenue projections, and the fear that taxpayers would be burdened with repaying the money if the construction or operations were halted. Bob Burleson, president of
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.