Marking the beginning of what India hopes will be an ongoing stream of public-private partnership deals, a consortium of Australia’s Leighton, the U.K.’s Balfour Beatty, France’s Vinci and the Hindustan Construction Co. submitted bids this month for the $1.2-billion concessionaire contract to build a 570-kilometer highway from Rajasthan to Gujarat. This road is the first of nine megaprojects conceived by the National Highways Authority of India. India has set a target for constructing 35,000 km of highways in the next five years under the National Highways Development Program. Out of the $60-billion investment, $40 billion is to come from the
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.