Related Links: Florida Awards Groundbreaking Highway Contract P3 Delivery Drives Construction Speed on Florida's I-595 Project The mission: to shoehorn three new 10.5-mile-long reversible toll lanes into the middle of a six-lane interstate highway—including work on 63 bridges and 2.5 miles of the Florida Turnpike—while minimizing disruptions to up to 200,000 daily vehicles in the Fort Lauderdale area of Broward County, Fla.The method: a concessionaire agreement with a design-build construction contract, a first for the Florida Dept. of Transportation (FDOT). The $1.8-billion Interstate 595 widening project also came with plenty of complexity, including southern Florida's quirky geology, various stakeholders and
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.