Mackinac Straits Corridor Authority | Michigan Radio
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Mackinac Straits Corridor Authority

A diver inspects Enbridge's Line 5 pipeline under the Straits of Mackinac for a possible dent.
Enbridge inspection video shared with the state of Michigan

During his final days in office, former Governor Rick Snyder signed legislation that created the Mackinac Straits Corridor Authority. Its purpose? To oversee construction of a tunnel under the Straits of Mackinac that would encase new oil and gas pipelines to replace Enbridge's aging Line 5.

Mackinac Bridge
Mark Brush / Michigan Radio

Michigan Attorney General Dana Nessel says a law passed last year to build an oil pipeline tunnel beneath the Mackinac Straits is unconstitutional.

One of the first things Gov. Gretchen Whitmer did when she took office in January was to ask for an attorney general’s opinion on the law, which former Gov. Rick Snyder pushed through in the waning days of the legislature.

A choppy surf crashes against the beach underneath the Mackinac Bridge.
Kaye LaFond / Michigan Radio

A new report says the State of Michigan did not thoroughly review Enbridge’s ability to cover costs in the case of a spill from its twin Line 5 oil pipelines before it signed an agreement with the company. The pipelines run underneath the Straits of Mackinac.