A horizontally curved, precast- concrete, trapezoidal type of box-girder design that shaved some $9 million off an interchange project in Orlando, Fla., is attracting growing interest from the bridge engineering industry.
The Westar Energy constructed-wetland treatment system in northeast Kansas uses a novel, two-tiered approach to remove environmentally sensitive metals and selenium in wastewater effluent from a coal plant before they can harm natural vegetation and wildlife.