The aviation industry has been hit by its share of turbulence in the past few years. Many airports had to defer projects or downsize capital improvement programs after revenue streams were curtailed sharply by upheaval in the airline industry, shaky credit markets, surging oil prices and decreased passenger travel. Photo: Chicago O’hare Airport The Chicago City Council recently approved $1 billion in bonds for O’Hare airport’s modernization program. The funds will be used primarily for runway projects, which will be bid by the end of 2011. Related Links: The Top Owners Sourcebook Complete Report Overview: No Quick Fix For Battered
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.