Gov. Mike DeWine will propose an 18-cents a gallon increase in the gasoline tax to maintain and upgrade Ohio’s roads and bridges in the transportation budget he submits to lawmakers Thursday. That would amount to a 64 percent increase in the state’s current 28-cent gas tax, which the state transportation director has said is insufficient for the state and local governments to maintain current roads or finish major new construction projects. DeWine revealed the number Wednesday on WTAM in Cleveland. He did not disclose if the amount would be phased in over multiple years. He also did not discuss if...