Covering the state with highways A generation of state highway plans have worked to open up every corner of Ohio to development. Access Ohio, the most 1993 long-range plan by the Ohio Department of Transportation, identifies "macro-corridors," a network of highways connecting every part of the state. This network passes through 76 of Ohio's 88 counties, and all counties are within at least 10 miles of a macro-corridor. The map at right shows these highways and the areas within 10 miles of them. According to Access Ohio, "up to 648 miles of the non-interstate macro-corridor network may need improvements at an estimated cost of $4.5 billion in 1993 dollars. In the next update of Access Ohio, ODOT will have to decide whether filling gaps in this network remains a priority for new construction.
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