 Then, in 1968, it was extended further east to Montgomery Road, through the back nine holes of the Swaim Fields golf course, for $1.8 million.In 1963, Hamilton County commissioners asked the Bureau of Public Roads to add the planned route of Cross County Highway to the Interstate Highway System.However, the designation of the Circle Freeway as Interstate 275 the previous fall meant that no additional Interstate mileage could be allocated to the state.