Next Steps & Schedule

The I-15 Stateline to Sloan Study is the first step in developing and implementing the long-term improvements needed for I-15. The next step will be to begin the environmental clearance process, which will build upon the work completed during this study to identify the final preferred alternatives, assess environmental impacts, and determine right-of-way needs.

Once environmental clearance is complete, NDOT will be able to develop an overall phasing plan based on funding availability and advance individual projects into final design and construction.

Four-phase project timeline: Planning (complete Oct. 2026), Environmental (begins 2027), Design, and Construction. Design and construction occur in multiple phases and depend on funding and NEPA approval. Planning is the current phase.