The widening of I-405 marks one of the few major design-build projects in Los Angeles to date. But thanks to an ambitious initiative to build 12 major transit projects by 2019, rather than over three decades, alternative project delivery methods are expected to be deployed on some of the county's biggest rail and highway projects.One of the highway projects that might benefit is the decades-old Interstate I-710 completion. “This project has the most promising P3 potential,” said Doug Failing, executive director of highway programs for the Los Angeles Metropolitan Transportation Authority, or L.A. Metro. His remarks came during a May
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.