Is there danger of an oil spill near Mackinac?
The state has given Enbridge a formal notice to reinforce its two oil pipelines beneath the Straits of Mackinac, which link Lakes Michigan and Huron. They were installed 60 years ago, but they don't meet the requirement of having supports every 75 feet. Last month, Enbridge said it intends to install more supports. The state also wants to know how long those pipelines are expected to last.