Competition among bidders for stimulus funded projects such as Interstate 10 from Sarival Avenue to Verrado Way means that nearly one third of the $350 million in stimulus funds provided to the Arizona Dept. of Transportation has been reallocated in a second round of projects. Phoenix, Ariz. Photo: Southwest Asphalt Paving Interstate 10, Arizona DOT’s second-largest ARA project, will be widened west of Phoenix from two lanes to three. Related Links: Stimulus: A Snapshot of Top Shovel-, Wrench- and Pencil-Ready Projects “The current economic conditions have created a trend toward lower-than-estimated bidding and a higher number of bids,” says ADOT
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.