Gateway to Roxford 345 kV Transmission Line Transmission

Gateway to Roxford 345kV Transmission

Client Ameren
Completion Date November 2021
Location Near St. Louis, Missouri

L.E. Myers served as both the general contractor and electrical contractor for the Gateway to Roxford 345kV transmission line, a 13.52-mile stretch from substation to substation – approximately 7 miles of which is located on Chouteau Island on the Mississippi River outside of St. Louis.  Originally installed in 1968, the existing steel lattice towers needed replacing and was rebuilt as a double circuit 345kV transmission line.

The project included the removal of all existing COR-TEN lattice towers and driven pile foundations, as well as the existing conductor. Old materials were replaced by 59 self-supporting lattice towers, ranging from 93-235 feet, and the installation of a double-circuit, double-bundled 795 kcmil ACSS conductor. The project also required the installation of two overhead optical ground wire (OPGW) shield wires and permanent lighting, as mandated by the FAA.  

Since the island was primarily accessible via weight-limited bridges, L.E. Myers needed to create out-of-the-box solutions to ensure the project was completed safely, to the client’s expectations and met USACE and FAA requirements. This problem-solving approach was recognized by NECA, the premier organization for electrical contractors in the United States. 

Related News: L.E. Myers Wins 2022 NECA Project Excellence Award for Overhead Transmission Work in Decatur, Illinois District

Line Contractor (Electrical Contractor Magazine): An Out-of-the-Box Approach: The L.E. Myers Co. workers learned new lessons in the Gateway to Roxford 345kV Transmission Line Project