Demand far exceeds supply for the Dept. of Transportation’ $1.5 billion in Transportation Investment Generating Economic Recovery (TIGER) discretionary grants. DOT reported on Sept. 25 that its preliminary tally shows it received 1,381 applications for the grants from all 50 states and other jurisdictions. Those requests seek a stunning total of $56.9 billion. The grant program, established by the American Recovery and Reinvestment Act, is aimed at big-impact projects. DOT says 771 of the TIGER applications are for highway projects, requesting a total of $32.2 billion. Transit ranks second, with 220 applications totaling $10.7 billion. DOT Secretary Ray LaHood has
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.