Straits infrastructure project moves forward
The replacement of Enbridge's Line 5 pipeline inside a tunnel at the Straits of Mackinac will protect one of the most important and vital natural resources in the world.
An advancement in safety, and a $500-million investment in Michigan
Line 5 Straits tunnel project demonstrates Enbridge’s commitment to protecting the Great Lakes
Line 5 Straits tunnel agreement
This document outlines the official agreement between the Mackinac Straits Corridor Authority (MSCA) and Enbridge to build a tunnel housing the Line 5 pipeline under the Straits of Mackinac.
Third agreement between Enbridge and State of Michigan
This document outlines the third agreement between the State of Michigan and Enbridge pertaining to Line 5.
Fact sheet: Line 5 Straits of Mackinac tunnel

A Line 5 Straits of Mackinac tunnel would be state of the art, with enhanced safety features, further demonstrating Enbridge’s commitment to protecting Michigan’s natural resources.

 

Line 5 Straits tunnel lease
This document outlines lease terms pertaining to the Line 5 Straits tunnel agreement between the Mackinac Straits Corridor Authority (MSCA) and Enbridge.