An Indiana bill that paves the way for a public-private partnership to design, build and operate the $1.1-billion Illiana Expressway through Indiana and Illinois unanimously passed the Indiana Senate on March 2. The 25-mile expressway would provide an east-west bypass for truck traffic and commuters south of Chicago by linking I-65 in Indiana with either I-57 or I-55 in Illinois. The bill authorizes the Indiana Finance Authority to search for a private investor to finance the design and construction of the roadway, as well as operate the road as a tollway. Construction is expected to begin in 2017.
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.