[1] The right-of-way of the Powerline Trail was originally occupied by a railroad used for transporting coal to a St. Francis power plant.

[2] A 2006 study performed by the Wisconsin Bike Fed for the City of Milwaukee recommended the creation of a trail on a We Energies-owned right-of-way between Interstate 894 in Greenfield and Packard Avenue in St.

[5] As of 2022[update], a second segment between 60th Street and Greenfield's Pondview Park is being planned, and the cities of Milwaukee, St. Francis, and West Allis are pursuing funding for future segments.

[6] The trail begins with a connection to the Oak Leaf Trail's Root River Line near South 104th Street and travels east along the southern side of Cold Spring Road until I-894, where it bends north to meet a We Energies right of way.

The trail briefly runs north along the east side of the highway, then travels east along the right-of-way until reaching its eastern terminus at 60th Street.