Island ferry channel.

Enbridge pipeline

West of the iconic Mackinac Bridge is Enbridge's pipeline, called Enbridge Line 5, which was built in 1953 as an extension of the 1,150 mi Interprovincial Pipe Line Company line bringing oil from Alberta to Lake Superior. The 1953 pipeline enters the Straits of Mackinac water on the north shore at St. Ignace, Michigan, and lies

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