Enbridge Energy will issue requests for proposals in the coming weeks for contractors to construct a $500-million Great Lakes tunnel to carry crude oil and natural gas liquids through the Straits of Mackinac between Michigan and Ontario. Ryan Duffy, spokesman for the Calgary, Alberta-based energy company, said the RFP process will take about six months.
The announcement comes after the Mackinac Straits Corridor Authority on Feb. 16 concurred with a staff recommendation that Enbridge meets all requirements specified in a 2018 agreement between the firm and the State of Michigan.