Project Background

On Oct. 20, 2009, the RTD board of Directors approved the final I-225 Environmental Evaluation (EE). The adoption of the final EE is a major milestone because it allowed the team to move into the next phase of the project, final design of Segment 1, Nine Mile Station to Iliff Station. Completion of the EE also allows the project team to complete final design and construction of the remainder of the corridor when funds become available.

In 2005, RTD completed the 3 Corridors Scoping Study,
which furthered RTD's analysis of the I-225 Rail Line. The study
highlighted a number of options and areas of refinement to be considered
in the next phase. These are being considered as part of the current
study. 

In 2001, RTD completed the I-225 Major Investment Study, Parker Road to Interstate 70.  The purpose was to identify a mix of conceptual alternatives, screen those that would not satisfy certain evaluation criteria, perform a detailed analysis on a short-list of alternatives, and arrive at a locally preferred alternative (LPA). The process balanced various interests and impacts including mobility, cost, public support, environmental and community impacts.