American Transmission Company, in its April 23 quarterly progress report for the period Jan. 1 through March 31 regarding its Bunker Hill-Blackbrook (M13) Project, told the Public Service Commission of Wisconsin that construction in the rebuild section between the Bunker Hill and Blackbrook substations is now complete.
The demolition of the old M13 line between Bunker Hill and Blackbrook is also complete, the company said, adding that restoration work on the right of way (ROW) in that area will continue this spring. The final phase of T-line construction will start late this year, with all work scheduled to be complete by spring 2019, the company said.
As TransmissionHub reported, the commission in July 2016 granted, subject to conditions, ATC’s application to build and place in service facilities for the project, which includes building a new substation; rebuilding the 115-kV M13 transmission line from the Bunker Hill switching station in Lincoln County, Wis., to the Blackbrook switching station in Langlade County, Wis.; uprating the 115-kV M13 transmission line from the Kelly substation in Marathon County, Wis., to the Blackbrook switching station; as well as retiring and removing the Bunker Hill and Blackbrook substations.
The route of the rebuild portion of the project begins at the Blackbrook substation in the town of Ackley, Langlade County, and follows the existing M13 line route west to the proposed Ackley substation in the town of Pine River, Lincoln County. The rebuild would take place adjacent to the existing M13 line and is 8.2 miles long, the PSC added, noting that the route of the uprate follows the existing M13 route south from the proposed Ackley substation to the Kelly substation in the village of Weston, Marathon County.
In its April 23 filing, ATC said that construction of the new Ackley substation and all connected remote substations is expected to be completed this month. Site restoration work at Ackley will continue this spring, the company said, adding that the demolition of the Bunker Hill and Blackbrook substations is in progress and expected to be complete by the end of April.
Environmental monitoring began with the start of ROW clearing, the company said, noting that monitoring continues for the new Ackley substation and on the ROW for the rebuild.
Expenditures as of March 31 were about $21.5m, or about 72%, of the authorized total of about $29.7m, ATC said.