The National Environmental Policy Act (NEPA) process for the State Highway 82 (SH 82) Entrance to Aspen project began in January 1994. A Draft Environmental Impact Statement (DEIS) was released for public review and comment in August of 1995. The DEIS evaluated three alternatives between Buttermilk and Maroon Creek Road, and seven alternatives between Maroon Creek Road and the intersection of 7th and Main Street. As a result of comments on the DEIS from community members and other local partners, the Colorado Department of Transportation (CDOT) expanded the analysis to include new alternatives and extend the project limits to Rubey Park in Aspen. The Supplemental Draft EIS (SDEIS) evaluated three additional alternatives between Pitkin County Airport and Rubey Park. The SDEIS was released in July of 1996. In August of 1997, the final EIS was released. The Record of Decision (ROD) was developed as an output of the final EIS. The ROD, which includes the Preferred Alternative, was released in August of 1998.