Vehicular traffic moving through rural sections of Interstate 35 in Texas is growing at a dramatic rate. The primary objective of this report is to demonstrate the future loss of personal mobility by the highway user on rural sections of the Interstate. A second primary objective is to lay the groundwork for a comprehensive economic analysis of the problems associated with large traffic flows by using rural IH-35 as an example of a high-traffic corridor. Additionally, this report will provide a foundation for suggesting alternative solutions to the problem of traffic congestion on high-traffic corridors. By demonstrating the problems of growing traffic demand on rural high-traffic corridors in Texas, and by building on the findings of an earlier study, we suggest that a supercorridor--also known as a managed transportation system (MTS)--continues to be a feasible option for mitigating the growing traffic congestion problems on rural corridors.