Federal highway, transit and airport grant programs notched small gains and high-speed rail won a surprisingly large $4 billion in a fiscal 2010 transportation and housing spending bill that the House passed on July 23. The $123.1-billion measure includes $75.8 billion for the Dept. of Transportation, a 13% gain over DOT’s 2009 funding. The bill also has $47 billion for the Housing and Urban Development Dept. The Senate Appropriations Committee is slated to take up its version of the DOT-HUD bill on July 30. The House bill would set the 2010 highway obligation ceiling at $41.1 billion, up 1% from
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.