Enbridge Line tunnel project delayed again Tom Sasvari Apr 05, 2023 - 4 min read A diver assesses the Line 5 pipeline, which runs through the Straits of Mackinac. Source: Shutterstock A diver assesses the Line 5 pipeline, which runs through the Straits of Mackinac. Source: Shutterstock This post is for paying subscribers only Subscribe now and have access to all our stories, enjoy exclusive content and stay up to date with constant updates. Subscribe now Already a member? Sign in