US Army Corps of Engineers
Detroit District Website


Enbridge Line 5 Tunnel

File No. LRE-2010-00463-56-A19

Project Summary

Enbridge Energy, LP, has submitted an application for a Department of the Army (DA) permit to construct a pipeline tunnel under the bed of the Straits of Mackinac between Point LaBarbe, St. Ignace, Mackinac County, and McGulpin Point, Mackinaw City, Emmet County, Michigan.  The tunnel would house a new 30-inch pipeline for light crude oil and liquid natural gas which would replace the existing dual submerged Line 5 pipelines crossing the Straits of Mackinac.

A detailed project description is in our public notice.

The purpose of the proposed work is to transport light crude oil and liquid natural gas between the upper and lower peninsulas of Michigan.

Project Location

Contact Information

USACE Detroit District Regulatory Office

477 Michigan Avenue

Detroit, Michigan 48226

Related Sites

State of Michigan Line 5 Website