I-90 West Three Forks to Bear Canyon logo

The anticipated schedule follows a 14-month timeframe. A public draft of the I-90 West Three Forks to Bear Canyon Corridor Study is anticipated by January 2027, with study completion anticipated by February 2027.

Timeline showing the I-90 Corridor Study schedule from January 2026 through February 2027. The study has progressed through multiple phases including Existing and Projected Conditions beginning in January 2026 and extending through August 2026, Needs and Objectives from July 2026 through September 2026, Improvement Options from August 2026 through January 2027, and the Corridor Study Report phase extending from November 2026 through February 2027. Technical milestones include an Involvement Plan in February 2026, Environmental Scan in June 2026, Existing and Projected Conditions Memo in July 2026, Needs and Objectives Memo in August 2026, Improvement Options Memo in November 2026, Public Review Draft Corridor Study in January 2027, and the Final Corridor Study in February 2027. Ongoing public, advisory committee, and resource agency involvement occurs throughout the study, with initial advisory committee meetings in March 2026 and July 2026, followed by additional meetings extending from August 2026 through February 2027. Resource agency meetings are anticipated in August and September 2026, and public outreach is planned for August 2026 and December 2026. All dates are subject to modification as the study progresses.
Updated as of July 2026, subject to modification over the course of the study. Click to enlarge image.