US-20 Chester to Ashton
All dates below are specific to the schedule of the Environmental Review and Permitting processes for this project.
ENVIRONMENTAL REVIEW AND PERMITTING STATUS
IN PROGRESS
ESTIMATED COMPLETION DATE OF ENVIRONMENTAL REVIEW AND PERMITTING
01/30/2026
ENVIRONMENTAL REVIEW AND PERMITTING PROCESSES
COMPLETED
SECTOR
Surface Transportation
CATEGORY
Project Category
DOT Projects
LEAD AGENCY
Department of Transportation, Federal Highway Administration
Other Agencies with Actions or Authorizations:
Department of the Interior, Fish and Wildlife Service
Department of the Army, US Army Corps of Engineers - Regulatory
Description:
Idaho Transportation Department (ITD), in coordination with the Federal Highway Administration, is proposing improvements to approximately 10.2 miles of U.S. Highway 20 (US-20) between the unincorporated community of Chester and the City of Ashton in Fremont County, Idaho. The project limits include US 20 from approximately Mile Point (MP) 350.3 to MP 360.5. In addition, several local roadways are included to accommodate changes to access resulting from the Project.
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Permitting Timetable
The permitting timetable below displays data as reported by agencies. Dates for Environmental Review and Permitting processes (Actions) that are in 'Paused' or 'Planned' status are subject to change and are not indicative of a project's final schedule.
- For information about extensions, select an Action from the timetable below and select 'View Action Details' at the bottom of the page.
Action Information
For additional information, please select an Action from the Permitting Timetable above.
- Action:
- Responsible Agency:
- Bureau:
- Action Status:
- SHPO:
- Action Identifier:
- Action Outcome:
| Milestone | Original Target Date | Current Target Date | Milestone Complete |
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