GRAND RAPIDS, Mich. (WOOD) — Federal regulators have released a long-awaited study on the environmental impact of the Line 5 Project.

On Friday, the U.S. Army Corps of Engineers Detroit District published its initial analysis for the project that would seek to build an underground tunnel for the aging Enbridge oil pipeline that runs along the Straits of Mackinac. The federal review took over a year longer to publish than expected.

Enbridge Energy wants to build a tunnel to hold a portion of its 70-year-old oil pipeline that sits at the bottom of the straits connecting Lake Huron and Lake Michigan. The project was proposed in 2018 at $500 million but has been bogged down by legal challenges.

The four-mile pipeline currently moves about 23 million gallons of oil and natural gas liquids da

See Full Page