A pedestrian bridge under construction collapsed Sept. 21 near Delhi, India's Jawaharlal Nehru Stadium�the site of the Commonwealth Games scheduled to begin Oct 2. Twenty-seven workers with Chandigarh-based PNR Infra. were injured, some after jumping off the collapsing span. Some of the laborers were hurt jumping from the structure as it came down. The $2.3-million steel arch-supported footbridge was 90 meters long and about 1 m wide. The bridge was being constructed by the north Indian city. Government agency Rakesh Mishra, Public Works Dept. engineer-in-chief, says it appears the ramp seat was not capable of carrying the slab weight. “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.