Jackson Road - Marshall Transmission Line Rebuild Project

    Indiana Michigan Power (I&M) is upgrading the 34.5-kilovolt (kV) transmission line that connects the Jackson Road Substation to the Marshall Substation. The improvements in St. Joseph and Marshall counties are essential to ensure continued reliable electricity is available for customers.

    The existing transmission infrastructure has reached an age where it is in need of rebuild and redesign to improve reliability for customers across the region. To upgrade the line, aging wood poles will be replaced with steel monopoles. Rebuilding approximately 13 miles of 34.5-kV transmission line to 69 kV decreases outages and speeds recovery of service when outages occur.

    Project Updates

    Early 2019: Construction began for Jackson Road-Marshall Transmission Line in early 2018 and is expected to be completed by Fall 2019.

    Summer 2017: I&M announced the final line route for the Jackson Road - Marshall Transmission Line Rebuild. The announcement follows an open house held in April, which provided information about the project and provided property owners with the opportunity to ask questions and provide input. Details around the final line route can be viewed on the interactive map above.

    Project Releases

    Fact Sheet



    I&M will replace aging wood poles with steel monopole structures approximately 80-feet in height. The structures will be placed in the center of a 60-foot wide right-of-way corridor.

    I&M is committed to meeting the energy needs of customers while protecting the environment and natural beauty of the region.

    * Exact structure, height and right-of-way may vary

    * The accompanying map depicts the project area. It should be noted that the map contained on this site is for information purposes only. AEP reserves the right to alter, change, or amend the map at any time without notice and AEP provides no warranty about the accuracy of content. Keep this in mind when reviewing this map. However, AEP will make all attempts to keep this map as accurate as possible. If you have any questions about the accuracy of the current map please Contact Us.