Looming showdown as Michigan governor orders Canadian pipeline shut down

[Finishline42]

3. This from Nov 2017 - line replacement project

https://www.enbridge.com/~/media/Enb/Documents/Factsheets/FS_Line5_St_Clair_HDD-Factsheet_Feb_2018.pdf

edited to add...

Enbridge instead is moving forward with plans to bore a $500 million tunnel in bedrock beneath the Straits of Mackinac to hold the Line 5 pipelines. The Michigan Legislature approved a deal for the tunnel shortly before former Gov. Rick Snyder left office in December 2018.

Enbridge contends that the tunnel would contain any spilled oil if Line 5 ever ruptures, preventing it from contaminating the Great Lakes. Environmentalists disagree and remain concerned that the twin pipelines pose a hazard to the ecosystem in the Straits.

https://www.abc12.com/2021/04/28/enbridge-line-5-dispute-raises-tensions-between-us-and-canada/