Click below on each box to view more about the project We have identified the 10 largest construction projects or programs that are under construction, globally. It does not contain large-scale purely residential developments or normal multiyear infrastructure (highway, water and wastewater) spending programs by national, state, provincial or regional governments. Given the size and scope of these huge efforts, almost all could justifiably be designated construction programs. They have been ranked in terms of their cost, based on U.S. dollars. Project costs are not adjusted to reflect the significant differences in purchasing power among countries. ENR has tried to
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.