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Sonora Junction Shoulder Widening Project

Project Information

The Sonora Junction Shoulder Widening Project is widening the existing paved shoulders on U.S. 395 in Mono County from Burcham Flat Road to the south side of the junction with State Route 108. Crews are installing shoulder rumble strips, upgrading existing guardrails to Midwest Guardrail System, and correcting the super-elevations of three substandard curves. This project is meant to enhance roadway safety and make the highway accessible to all modes of transportation. There were three “build” alternatives considered for this project. All three alternatives will require realigning Hot Creek about eight-tenths of a mile south of Little Walker Road to prevent the creek from undermining the highway. 

The preferred project alternative will widen the highway shoulders to the standard 8-foot width. This alternative will also include approximately 1,050 linear feet of retaining walls, stabilizing cut slopes with anchored wire mesh, and extending or replacing existing culverts. Additionally, the preferred alternative calls for the installation of wildlife undercrossing structures in two locations and wildlife exclusionary fencing to connect the two structures.

 

Crews work on erosion control on the Sonora Junction Shoulders project.

These steel posts will frame the retaining wall within Sonora Junction Shoulders.

Crews work on erosion control on the Sonora Junction Shoulders project.

Crews are altering slopes within Sonora Junction Shoulders.

Photos from June 24, 2024. Click images for a larger view. 

Project Map

Environmental Document

The Final Environment Document for the Sonora Junction Shoulder Widening Project is available for public review upon request. To obtain a copy:

  • Email us at D9PublicInfo@dot.ca.gov.
  • Call us at (760) 872-0601.
  • Write us at Caltrans Public Information Office, 500 S. Main Street, Bishop, CA 93514.

Project Cost

The estimated cost of this project is $20.1 million.

Project Timeline

Project Schedule (Subject to change):

  • February 2021: Draft Environmental Document for Public Comment 
  • May 2021: Final Environmental Document and Alternative Chosen  
  • November 2023: Advertise 
  • March 2024: Contract Approval 
  • May 2024: Begin Construction 

For More Information

Title VI

For Title VI information, click here: Caltrans Title VI