After we conducted our routing and public outreach process, ATXI filed proposed routes with the PSC requesting review and approval of the project. On November 3, 2021 the Missouri Public Service Commission approved the route and issued a Certificate of Public Convenience and Necessity (CPCN) for the Limestone Ridge Project.
With the route approved by the PSC, landowners will be approached in January 2022 by Ameren Illinois to begin discussions about real estate and field studies. This important milestone in the project process is dependent upon open communication and lays the foundation for the future phases of construction.
As our team works with landowners on the real estate process and pre-construction activities, we would like to thank the communities for their time and cooperation in developing this important Project.
Docket Number: EA-2021-0087
Materials:
All items shown are pending regulatory approvals. Schedule is subject to change.
Collect digital & field data
Public engagement
Route development
Preliminary engineering
File Certificate with PSC
Certificate reviewed by PSC
Field surveys
Real estate acquisitions
Engineering and permitting
Preconstruction activities
Construction
Project complete in December
For a high-level overview of the Limestone Ridge Project, view the Study Area Map (June 2020) (PDF).
ATXI will seek feedback and input from the public through a series of public engagement events (summer – fall 2020) before submitting a route and application for a Certificate of Convenience and Necessity to the Missouri Public Service Commission in Q1 2021. The project is proposed to be in service by December 2023.
Corridors and routes are developed considering defined routing criteria. The goal of the routing process is to take advantage of Opportunities while understanding and minimizing impacts to Sensitivities and adhering to technical guidelines.
The routing process starts with a large study area, which is then narrowed into wide corridors. Preliminary routes segments (more narrow) are then developed within the corridors using routing criteria. Stakeholder and community input is sought throughout the process. The goal is to identify a final route that will balance minimizing impacts to Sensitivities, with the cost of building and maintaining a safe and reliable transmission line within the statutory requirements.
We anticipate using galvanized steel monopole structures. The structures will be approximately 100-160 ft. tall. We estimate 6-7 structures per mile with an average span range of 800-1,000 ft. between structures. The Limestone Ridge Project steel monopole structures will have 7-12 ft. diameter concrete foundations. The foundations will range from 30- 40 ft. deep, depending upon the soil conditions.
Transmission lines are similar to the interstate highway system in the way they will allow energy from generators to travel short or long distances, as needed, at any given moment. There are no restrictions on the type of energy that will flow on the new line. Ultimately, the energy carried on the line will be used throughout the regional grid, including by customers in the Project area and elsewhere.
The Limestone Ridge Project is not being proposed in Illinois due to several factors including:
(573) 232-3003
Limestone Ridge Project
45 S Minnesota
Cape Girardeau MO 63703