under pressure rises above the aquifer level. A __________ is located where the pressure surface is above the aquifer, but below the ground. nonflowing artesian well. If a well is drilled into an aquifer where the pressure surface is both above the aquifer and the ground, a __________ is formed. flowing artesian well.
Longest Single Span: 1,200 feet. Engineer(s): Figg & Muller Engineering Group. Completed in 1987, the Sunshine Skyway is the world's longest cable-stayed concrete bridge. It is probably the best known of the several dozen cable-stayed bridges that have been built in the United States since the late 1970s.
By the time Congress created the Interstate Highway System in 1956, nearly all Chicago-area expressways were laid out, but federal funding pushed construction into high gear. The Kennedy Expressway opened in 1960, linking the Loop to the new O'Hare Airport and the Northwest Tollway (I-90). The Dan Ryan Expressway opened to 95th Street in 1961â62. The abandoned Illinois & Michigan Canal provided a convenient right-of-way through the city for the Stevenson Expressway (I-55), opened in 1964.