Delivering the energy that keeps Michigan moving since 1953.
Voices of support: Line 5 Straits tunnel

Public support for our Line 5 tunnel plan has come from elected officials, policy experts, media columnists and editorial boards—from Michigan and elsewhere.

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.
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.

 

Interactive webpage: Protecting what matters
Find out how we safeguard the Great Lakes at the Straits of Mackinac crossing, through a series of overlapping safety precautions.
Enbridge's economic impact on Michigan
Learn more about the ongoing tax revenue, local and regional economic stimulation, community investments, and workforce salary provided by Enbridge in your area.
Advancing renewable energy

We never stop thinking about the future of energy and sustainability. That’s why we’re investing in renewable energy projects that complement our system, and meet the demand for safe, reliable and affordable energy well into the future.

St. Clair River HDD Installation
Replacing the existing Line 5 St. Clair River crossing segment is one of our commitments as part of Enbridge's agreement with the State of Michigan.
Upper Peninsula propane retailer: ‘Losing Line 5, you just can’t talk like that’
Enbridge’s Line 5 delivers 65% of the propane used in the U.P., and 55% of Michigan’s statewide propane needs
Enbridge presents Line 5 Straits of Mackinac replacement alternatives to State of Michigan
Study IDs tunnel and open-cut secondary containment installations as feasible options
Enbridge welcomes State approval to commence geotechnical program

The State of Michigan has affirmed Enbridge's rights to collect geotechnical samples as permitted by the Department of Environment, Great Lakes and Energy, in relation to our Line 5 Straits of Mackinac tunnel project.

Seven ways to protect Michigan's water
November 2017 agreement between Enbridge and Michigan outlines seven actions to protect State's water.
About Line 5
A vital piece of Michigan energy infrastructure since 1953.
Enbridge's Line 5 water crossings safety study
This comprehensive report, delivered on June 29, 2018 to the State of Michigan, examines potential safety enhancements at Line 5 water crossings other than the Straits of Mackinac.
Enbridge's Line 5 Straits replacement alternatives report
This detailed report, delivered on June 15, 2018 to the State of Michigan, explores feasible alternatives to Enbridge's Line 5 Straits of Mackinac crossing.
Safeguarding the Great Lakes

We take special precautions to protect the Great Lakes.

Line 5 fact sheets and brochures

Read more about Line 5, the multiple safety precautions we take in the Straits of Mackinac, and the line's benefits to the Michigan economy.

Line 5 inspections

Regular examinations of the pipe, both inside and out.

Enbridge's Line 5 Straits anchor strike mitigation study
This comprehensive report, presented to the State of Michigan on June 29, 2018, explores options for protecting Enbridge's Line 5 from anchor strikes in the Straits of Mackinac.
Contact Enbridge in Michigan

We'd like to hear from you.

Line 5 operations and maintenance

Multi-layered protections have maintained Line 5 safety for more than six decades.