Iowa and Dane Counties, Wisconsin:
ATC Local Relations
866-899-3204, ext. 3540
Grant County, Wisconsin and
Clayton and Dubuque Counties, Iowa:
ITC Midwest Local Government and Community Affairs
ATC media line:
ITC Midwest media line:
Dairyland media contacts:
608-787-1378 or 608-787-1323
As of January 12, 2023, there are 115 renewable generation projects dependent upon the construction and operation of Cardinal-Hickory Creek. Click on the image above to view the interactive map.
American Transmission Co., ITC Midwest LLC and Dairyland Power Cooperative have plans for a high-voltage transmission line connecting northeast Iowa and western Wisconsin that would provide economic savings, support renewable energy policy and improve electric system reliability.
A project area from Dubuque County, Iowa, to Dane County, Wisconsin, has been identified for the approximately 102-mile, 345-kilovolt line. Studies indicate that the Cardinal-Hickory Creek Project is a multi-benefit project that would deliver benefits to local communities and the Midwest region by:
|Initiated public involvement||2014|
|Project approval, Public Service Commission Wisconsin||Fall 2019|
|Record of Decision, U.S. Dept. of Agriculture – Rural Utilities Service||Winter 2020|
|Project decision, Iowa Utilities Board||Spring 2020|
|Authorizations issued, U.S. Army Corps of Engineers and U.S. Fish & Wildlife Service||Fall 2020|
|Initiate construction - Iowa||April 2021|
|Initiate construction - Wisconsin||November 2021|
|Project in service||December 2023|
*For additional details, please see the project schedule. Please also note that construction activities and dates are subject to change.
Areas benefited: Iowa, Wisconsin and the Midwest
Length of line: Approximately 102 miles
Voltage: 345,000 volts
End points: The western end point of the line will be in Dubuque County, Iowa. The eastern end point of the line will be the Cardinal Substation in the Town of Middleton, Wisconsin. The project also will include construction of a new mid-point substation near Montfort, Wis.
News & updates
Construction and Mitigation Plans