When ethnic violence erupted last summer in northern Kosovo, builders of the country’s first modern motorway found the project’s sole supply quarry inaccessible behind roadblocks. The U.S.-Turkish construction team scoured the Balkans for aggregate and secured an alternate source just in time to continue work. The team recently completed the highway’s first section.
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.