USACE, Detroit District, announces the availability of the Enbridge Line 5 Tunnel Project Final EIS and the commencement of the 30-day waiting period that will end on March 9, 2026, after which USACE will issue a Record of Decision documenting its decision regarding Enbridge’s application. The Final EIS assesses the potential impacts of the Applicant's Preferred Alternative (construct a 3.9-mile tunnel beneath the lakebed of the Straits of Mackinac in Lake Michigan to house a replacement segment of the Applicant's existing Line 5 pipeline), the Existing Dual Pipelines Engineered Gravel/Rock Protective Cover Alternative, the HDD Installation Alternative, and the No Action Alternative. Environmental resources analyzed within the Final EIS include geologic resources, water resources, biological resources, cultural resources, air quality, noise and vibration, transportation and navigation, land use and recreation, aesthetics, soils, socioeconomics, and reliability and safety. The Final EIS also responds to public comments received on the May 2025 Draft EIS, as well as the November 2025 Supplemental Draft EIS.
