When built, Brazil’s first high-speed railroad will speed commuters across the 530 kilometers between Rio de Janeiro and S�o Paulo in just one hour and 30 minutes. But the bidding process has been slowed due to a dispute over procurement rules between the government’s Agency of Land Transportation (ANTT) and the national Audit Court of Brazil (TCU), testing the patience of potential bidders. + Image Map: Brazilian Government Planned high-speed rail route might not be done in time for next World Cup. Aware of the increasing disillusionment among bidders for the line’s 40-year design-build-maintain-operate contact, the government and court appear
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.