The Mark Twain 161 Kv Connector Transmission Line Project


An integral part of the Mark Twain Transmission Project is the planned construction of Zachary Substation on the south side of Kirksville.

To bring electricity from Mark Twain to Missouri utility customers, it is necessary for Ameren Transmission Company of Illinois (ATX) to build a 161,000-volt connector transmission line from the existing Adair Substation to the new Zachary Substation. This connector transmission line will be approximately 2 miles in length.

After meeting with area residents and stakeholders in individual meetings as well as a public Open House event, the Mark Twain Transmission Project Team reviewed all feedback along with information collected from various sources, including state agency databases and other resources, to determine a final route. After careful review, the final proposed route to be submitted to the Missouri Public Service Commission (PSC) is below.

Learn More
Project Fact Sheet, 161,00 Volt Connector Line
Printable Version of Map (below)



For the approximately 2 mile connector transmission line, our project team began by identifying the project area and the project endpoints (the Adair and Zachary substations) as well as the route selection criteria. Read more. Next, the team developed the route alternatives.

Project team members then met individually with a number of community representatives. We also sent a project map and letter to all potentially impacted landowners. In the letter, we invited landowners to meeting individually with project experts. At these sessions, we explained the project, listened to suggestions, responded to concerns and answered questions.

In additional, we scheduled an Open House to provide all interested area residents with the opportunity to meet with our experts, learn the details of the connector transmission line, express concerns and ask questions.

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