 By mid-century, in the years before creation of the Interstate Highway System in 1956, superhighways in the form of additional toll roads such as the New Jersey Turnpike and the Ohio Turnpike began stimulating economic development and enhancing transportation in the eastern United States.The challenge of terrain in West Virginia mirrored that of Pennsylvania in some ways, but with several important distinctions.The most important of these was that the first portion of the Pennsylvania Turnpike had largely followed and utilized a costly earlier rail project which had never been completed.