Michigan issues Line 5 tunnel permits
Analysis based on 20 articles · First reported Jul 15, 2026 · Last updated Jul 26, 2026
The permit approvals reduce regulatory uncertainty for Enbridge's Line 5 tunnel project, supporting the company's long-term infrastructure plans. However, continued legal challenges and opposition from tribal nations and environmental groups may delay construction and increase costs.
United States — Michigan state agencies issued key permits for Enbridge's controversial Line 5 tunnel project in the Straits of Mackinac, concluding the project's benefits outweigh drawbacks including disruption to Native American burial sites and harm to wetlands and rare species. The permits from the United States — Michigan Department of Environment, Great Lakes, and Energy (EGLE) and the United States — Wisconsin Department of Natural Resources (DNR) also pave the way for the U.S. Army Corps of Engineers to sign off. The project aims to replace an aging segment of the Line 5 pipeline with a tunnel buried beneath the lakebed to reduce oil spill risk. Opponents, including the Bay Mills Indian Community and environmental groups, criticized the decision and vowed legal challenges. Enbridge hailed the approvals as a milestone. The project faces ongoing litigation and additional permit requirements.
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