The Arizona Corporation Commission approved the project in March 2011. As part of the application process, TEP conducted several natural, cultural and visual studies and mailed project newsletter updates to thousands of nearby property owners and residents. TEP sponsored open house meetings and worked extensively with neighbors, government representatives and members of other community groups to design the line's route.
From the DMP substation, the line will travel south along the east side of Interstate 10 to East Speedway Boulevard, where it will cross west over the interstate and continue south to St. Mary's Road. From there, the line will continue east and terminate at the Tucson Substation.
Once the project is completed, drought-tolerant vegetation will be used for landscape restoration. Some traffic control restrictions may be required during the construction process.