MPSC to Hold Virtual Public Hearing on Line 5 Tunnel

The Michigan Public Service Commission (MPSC) will hold an electronic public hearing on Aug. 24 to take input on Enbridge Energy LP’s request for siting authority of its plans to relocate a segment of the Line 5 pipeline to a tunnel beneath the Straits of Mackinac.

In June, the MPSC  established a full hearing process on Enbridge Energy’s proposed relocation of  approximately four miles of the Line 5 pipeline, the 645-mile interstate pipeline that spans both Michigan peninsulas to transport light crude oil, natural gas liquids and propane. Enbridge proposes replacing two 20-inch pipelines that now rest on the lakebed with a single 30-inch pipeline that would be housed in a proposed utility tunnel 60 to 250 feet beneath the lakebed. The proposed pipeline would involve a new easement and a 99-year lease of public trust property.

The hearing will take place from 4:00 to 7:00 P.M. virtually with public participation by telephone. Call in details can be found at and looking under Significant Upcoming Dates.