Through the Context Sensitive Solutions (CSS) process, the public has been involved in many of the steps taken in developing the corridors. Numerous preliminary corridor options were developed by the various advisory groups comprised of local shareholders– corridors that proposed an alignment through the center of the communities, and corridors that go around the communities. These corridors were discussed by the advisory groups and analyzed with respect to their compliance to Purpose & Need. The criteria used to evaluate the alternatives were developed using input from the public. However, all final decisions are made by IDOT and FWHA.