Fir Avenue Water Main Replacement

Project Overview

The general project scope includes demolition work, installation of 3,062 LF of new water main, 26 water services, 6 fire hydrants, match up asphalt for pavement patches, concrete curb and gutter, concrete driveway approaches and sidewalks. This project is part of the City’s ongoing infrastructure replacement program.

  • Cost: $577,804 plus contractor allowance of $43,335.30
  • Location: Mesa Drive and Fir Avenue in the Mt. Elden Park Subdivision, north of Flagstaff Medical Center
  • Project Manager: Trevor Henry
  • Timeline: June 2020 to October 2020
  • Contractor: Mountain High Excavation

2020 Periodic Updatesoctober photo


  • The final acceptance letter for the project is close to being issued. The contractor has given notice that the final punch list has been completed; City staff needs to review and confirm.  Record Drawings have been received and are under review.  ADEQ Approval of Construction will be submitted to ADEQ in the next few weeks.


  • Asphalt pavement was placed in the trench patches for 1/3 of the project limits. 
  • New water service lines were connected to existing meters for the entire project. 
  • Project restoration measures have started for the project limits. 

Project restoration in the natural area between Mesa and Fir Avenue

  • Notices of water shutdowns have been distributed per the City’s approved protocol. 
  • New infrastructure will reduce failures of the existing water system resulting in flooding of private properties downstream of Fir Avenue and Mesa Drive. 
  • New infrastructure will also reduce the costly operation and maintenance of the existing water system by minimizing breaks and material failures.


  • 8” waterline installation continues in Mesa Drive.
  • Approximately 850 feet has been installed with backfill.
  • Associated water service taps have been installed on the new main along Mesa Dr.


  • Notice to Procced was issued for July 6, 2020.
  • Mountain High Excavating setup traffic control for the project construction area.
  • Potholing efforts and pre-construction investigation are underway.
  • All residents have been contacted by the project team.