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.
The Gateway Arch, known as the Gateway to the West, is the tallest structure in Missouri. It was designed by Finnish-American architect Eero Saarinen and structural engineer Hannskarl Bandel in 1947 and built between 1963 and October 1965. It stands 630 feet (192 m) tall and 630 feet (192 m) wide at its base. The legs are 54 feet (16.5 m) wide at the base, narrowing to 17 feet (5.2 m) at the arch. There is a unique tram system to carry passengers to the observation room at the top of the arch.