American Transmission Company (ATC) on Oct. 21 told the Public Service Commission (PSC) of Wisconsin that construction on the St. Martins-Edgewood-Mukwonago Rebuild Project is scheduled to begin in 2018.
As TransmissionHub reported, ATC said that an Oct. 13, 2015, PSC order approved the rebuild of a line in southeastern Wisconsin where the lattice structures are almost 90 years old and at the end of their useful life.
No new right of way is needed for the project, which will extend 14 miles from the St. Martins substation to the Edgewood substation and continue to the Mukwonago substation, ATC said.
The project is estimated to cost $24.7m, and construction is projected to begin in fall 2017, to meet an in-service date in June 2018.
“Alternatives to the project have been considered, but no other reasonable alternatives to the proposed project exist that could provide adequate service in a more reliable, timely, cost-effective, and environmentally acceptable manner,” the PSC said in its order.
The PSC directed ATC to file quarterly progress reports to the commission, including the date construction begins and summaries of the status of construction, permitting and planned in-service date and project costs, among other things.
In its Oct. 21 quarterly progress report for the period July 1 through Sept. 30, ATC told the PSC that wetland mitigation credits were purchased through Tallgrass Land Conservation, LLC, in accordance with certain requirements set forth by the Wisconsin Department of Natural Resources.
Transmission line design continues with preliminary foundation design and evaluation of different construction installation techniques based on soil quality from soil boring reports, the company said.
Substation design and material procurement will recommence this month.
The company also noted that a request for an extension of time to start construction by September 2018, was filed with the PSC on Aug. 24.
Among other things, the company said that the approved total project costs are about $24.7m, and actual project costs as of Sept. 30 were about $1.3m.