American Transmission Co. projects

Project website for a Wisconsin-based company that owns and operates the high-voltage electric transmission system that powers communities in portions of the Upper Midwest.

Auburn – Barton – St. Lawrence Rebuild Project

Approximately 18 miles of 138,000-volt transmission line in Washington and south Fond du Lac counties needs to be rebuilt to serve the electric load in the area more effectively. The majority of the lines have reached the end of their useful life, and replacing them will enhance electric reliability and help meet the current and future needs of electric customers in the area.

The project includes:

  • Replacing the 1950s-era wood H-frame structures with new wood H-frame structures between the Auburn and St. Lawrence substations, and replacing the conductors and static wires, and
  • Adding OPGW (communications wire) to the existing steel structures between structure 951 and the Barton Substation.
Project at a Glance
Area benefited:Southeastern Wisconsin
Line length:Approximately 18 miles
Voltage:138,000 volts
Estimated cost:Approximately $18 million
End points:The Auburn Substation on Hwy 45 north of Kewaskum, the Barton Substation on Schmidt Road in West Bend, and the St. Lawrence Substation northwest of Slinger
Detailed engineering/designSummer 2019 - Fall 2021
Begin construction activities:Fall 2021
In-service date:Spring 2022
*Dates are anticipated and subject to changes