Photo Courtesy of Bridges to Prosperity Nonprofit Group Builds Footbridge in Rural Nicaragua Volunteers built a 164-ft suspension footbridge that allows people from several Nicaraguan villages to cross the Rio Jucuapa River safely near Jucuapa Abajo. Work ended on on Oct. 9. Turner Construction, New York City, and Flatiron Construction, Firestone, Colo., donated materials, expertise and personnel. The nonprofit group Bridges to Prosperity, Denver, supervised. The organization pinpoints key river crossing points for rural communities in need of health care, education and economic opportunities. It then recruits workers and collects materials. The organization also teaches footbridge design and engineering techniques
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.