The Los Angeles airport board on Oct. 19 awarded two contracts worth $1.26 billion to reconfigure Tom Bradley International Terminal at Los Angeles International Airport. The project will be built by Walsh Austin Joint Venture, Los Angeles, and is to be completed by 2013. A $545-million contract includes building nine new boarding gates. A $584.2-million contract covers security work.
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.