Building information modeling, still relatively rare in the transportation construction world, proved key in gaining public approval for a planned $573-million, 9.4-mile rapid-transit bus system in Hartford, Conn. Advocates hope transit agencies will begin to ramp up use of BIM in future projects. Slide Show Image: SEA Three-dimensional imaging proved a valuable public-outreach method. The Connecticut Dept. of Transportation had planned on design-build for the line connecting Hartford and New Britain. “We had a designer bring the project from [environmental permitting] to 30% design,” says Michael Sanders, ConnDOT transit administrator. But after then-Gov. John Rowland (R)—who had approved special design-build
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.