Courtesy Yaquina River Constructors The earthwork was substantial in the early phases of the Route 20 reconstruction. Related Links: ODOTs Route 20 website page Plagued Oregon Job Will Be Redesigned Did design-build have anything to do with the long delays in completing the tricky Route 20 road and bridge reconstruction project in Oregon? The original design-build joint venture team for the 6.5-mile project, which broke ground in 2005, is now off the job.The project principal for that joint venture suggests that in light of what happened, design-build isn’t suitable for difficult sites.“Design-build is more of a risk on sites with
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.