For more information on the permits covered by each of the timelines, visit the Line 5 applicable permits page.
On December 1, 2023, the MPSC issued an order approving Enbridge’s application to replace and relocate the segment of Line 5 crossing the Straits of Mackinac subject to a number of conditions. Additional information regarding the Commission’s order and approval can be found in the MPSC’s Line 5 Issue Brief.
On June 30, 2020, the MPSC issued an order that states that Enbridge is required to file an Act 16 application and to obtain Commission approval to construct the Line 5 Straits Replacement Project through a contested case. The Commission found that the Line 5 project involves important factual, policy and legal issues best resolved through a proceeding that includes discovery, comprehensive testimony and evidence to provide a robust record. The Commission observed that this proposal is a matter of significant public interest best addressed through a contested case. The June 30th order set a date for a public hearing and a subsequent Notice of Hearing scheduled a prehearing conference for the case.
On April 22, 2020, the Commission issued an order putting the Act 16 siting application on hold while it considered the request for a declaratory ruling and established a public comment period. All comments filed in response to this request are available in the case docket.
On April 17, 2020, Enbridge filed an application with the MPSC in Case No. U-20763 requesting siting approval under Act 16 to replace and relocate the Line 5 segment that currently crosses the Straits into a tunnel to be constructed beneath the Straits. In the alternative, Enbridge asked the MPSC for a declaratory ruling that it already has the authority from the Commission to construct the replacement segment based on the Commission's original 1953 order granting authority for the Line 5 pipeline.
Information on the Line 5 tunnel project proposal by Enbridge, including overview, timelines, recent permit documents and decisions, and more.
