Line 5 innovation and technology



Harnessing, adapting and advancing technology for safety.

Enbridge’s Line 5 Straits of Mackinac crossing has never experienced a leak in more than 60 years of operation. We’re working hard to keep it that way, and one of our primary strategies is to harness, adapt and advance commercially available technology in the interest of safety.

Enbridge’s Line 5 Straits of Mackinac crossing has never experienced a leak in more than 60 years of operation.

Enbridge has been working for two years with Michigan Technological University’s Great Lakes Research Center to test and enhance an Autonomous Underwater Vehicle (AUV) that maps the bottom of the Straits near the Line 5 crossing using sonar imaging. With inspections every two years, the data collected by the AUV is used to verify information collected by our inline inspection tools, and identify and remedy any potential issues.

Enbridge has also sponsored the operation and maintenance costs of a real-time environmental monitoring buoy, recently deployed by the GLRC in the Straits. Equipped with an Acoustic Doppler Current Profiler, the buoy reports information on water currents in the Straits for the benefit of everyone who uses the waterway. We expect to use information on currents, in tandem with AUV survey missions, to ensure the bottom of the Straits near Line 5 remains hazard-free.