From Ohio History Central
Today, interstates crisscross Ohio. Odd-numbered highways travel from the North to the South, while even-numbered ones travel east to west. Interstates 70, 71, 75, 76, 77, 80, and 90 all traverse Ohio, providing Ohioans with quick access to most parts of the state. The only area of Ohio inefficiently served by interstates is the southeastern quadrant. This region is part of Appalachia, and the lack of a strong transportation infrastructure here has inhibited the area's economic development.
[[Category:The Cold War and Civil Rights]]