In 2018, Enbridge proposed the tunnel as a form of secondary containment. To extend Line 5's life, the 3.6-mile tunnel would be bored into rock as much as 250 feet below the lakebed.

In 2018, Enbridge proposed the tunnel as a form of secondary containment. To extend Line 5's life, the 3.6-mile tunnel would be bored into rock as much as 250 feet below the lakebed.

LANSING, Mich,. (WPBN/WGTU) - - The Mackinac Straits Corridor Authority met in Lansing Friday to hear updates on the Line 5 Tunnel Project, especially about the permits that would allow ...

Line 5 tunnel project reaches key step; public input open on draft environmental impact statement. Enbridge's proposed Line 5 tunnel recently hit a permitting milestone.

MACKINAC ISLAND, Mich. (WPBN/WGTU)— More than a hundred protesters gathered on Mackinac Island Thursday to voice their concerns to the Line 5 tunnel project during the annual Mackinac Policy ...

The massive construction project has been the subject of controversy from advocates concerned about a potential environmental disaster should the infrastructure be damaged.

The U.S. Army Corps of Engineers will fast-track permits for building a protective tunnel around an aging Enbridge oil pipeline that runs beneath a channel connecting two Great Lakes.