Line 5: A vital piece of Michigan energy infrastructure since 1953.
Infographic: Line 5 span management program

See how we monitor, support and stabilize Line 5 as it passes under Michigan's Straits of Mackinac

Interactive webpage: Protecting what matters
Find out how we safeguard the Great Lakes at the Straits of Mackinac crossing, through a series of overlapping safety precautions
In the Straits: 2016 visual inspections

Our biennial inspection program worked as designed

Underwater inspections reinforce our stringent Line 5 safety standards
High-tech remote vehicles go deep for safety in Michigan's Straits of Mackinac
Safeguarding the Great Lakes

We take special precautions to protect the Great Lakes.

Enbridge’s Line 5 Straits Crossing is safe and fit for purpose, says PHMSA

Pipeline regulator's independent assessment based on 18 years of inspection data

Enbridge’s Line 5 Straits Crossing: Safely withstanding the test of time

Like other well-built and well-maintained steel infrastructure around the world, Line 5 was built to last.

About Line 5
A vital piece of Michigan energy infrastructure since 1953.
Line 5 fact sheets and brochures

Read more about Line 5, the multiple safety precautions we take in the Straits of Mackinac, and the line's benefits to the Michigan economy.

Responding to Michigan media

One way we provide transparent and factual information is by having conversations on local Michigan radio stations.

Michigan residents deserve factual information

The residents of Michigan – and their state officials – deserve factual information on Line 5 and the steps that Enbridge takes every day to protect the Straits of Mackinac, the Great Lakes and local communities.

Line 5 inspections

Regular examinations of the pipe, both inside and out.