Panamanian firm Constructora Urbana SA (CUSA) won the first dry-excavation contract in July 2007 with a low bid of $41.1 million for the Pacific locks access channel, but was outbid for the two subsequent jobs. However, CUSA offered its services to the winning firms and netted subcontracting jobs with both. “We have the equipment out there already, and we can pretty much keep doing what we have been doing,” says CUSA Executive Vice President Carlos Fábrega. “We keep our equipment operating and our people at work.” Photo: C.J. Schexnayder/ENR Non-canal expansion construction thrives in Panama. Related Links: Panama Widens Horizons
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.