Power lines are typically connected over canyons using a method similar to bridge construction. Initially, a lightweight rope or line is sent across the canyon to facilitate the pulling of heavier cables. This method allows for efficient installation without the need for extensive ground work. In modern projects, heavy-lift helicopters, often referred to as 'skycranes,' are employed to transport spools of wire and assist in pulling the lines into place. This approach enhances efficiency and safety, especially in challenging terrains.
