Fairview Canyon Tunnel Rehabilitation


The purpose of this project was to preserve the ability of the tunnel to convey Cottonwood Gooseberry Irrigation Company (CGIC) water rights from Fairview Lake to Cottonwood Creek.

The Fairview Tunnel was in need of maintenance. The tunnel outlet structure had failed. The corrugated metal pipe (CMP) installed in the top half of the tunnel to continue water delivery despite roof failures was deteriorating and could have failed at any time. Areas where support was installed in the lower half of the tunnel had failed or were going to fail in the near future. Failure of the CMP or collapses in the lower half of the tunnel could eliminate the ability of the tunnel to convey CGIC water rights from Fairview Lake.

FCE provided professional engineering services to:
   •  Secure funding for the project
   •  Define the condition of the tunnel
   •  Prepare preliminary engineering designs for the rehabilitation of the tunnel
   •  Obtain necessary permits
   •  Prepare the final design
   •  Prepare bid documents
   •  Bid the project
   •  Evaluate bids
   •  Manage the actual rehabilitation of the tunnel

Construction was divided into two phases. The first phase of work included:
   •  Replacing the tunnel outlet structure with box culverts
   •  Rehabilitating the lower section of the tunnel
   •  Video inspection of the CMP in the upper section
   •  Preparing design for Phase 2 using gathered data

Phase II included:
   •  Rehabilitating the inlet structure of the tunnel
   •  Rehabilitating the upper section of the tunnel
   •  Restoring the site

Award: ACEC-Utah Engineering Excellence Honor Award, 2013