Public transportation in Peru’s capital of Lima can be an intimidating affair. A bewildering cacophony of privately operated buses, minibuses and vans crisscross the city with men hanging out the doors, cajoling pedestrians to hop aboard. There is little respect for traffic rules. In an interview last year, Lima Mayor Luis Castañeda referred to city travel as “total and absolute chaos.” But city officials are hoping to bring some order to that chaos later this month when they unveil Lima’s new $538-million integrated urban bus system, El Metropolitano. The project—known as the Segregated High-Capacity Corridor, or by its Spanish-language acronym
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.