Michigan officials are ordering Enbridge Energy Partners LP to install additional support structures beneath two oil pipelines at the bottom of the Straits of Mackinac, the waterway linking Lakes Huron and Michigan.
State Attorney Bill Schuette and Department of Environmental Quality Director Dan Wyant said Thursday the company acknowledges it's not meeting a requirement that the pipelines have support anchors at least every 75 feet.
They say Enbridge agrees to add more supports this year. They say it's a step toward protecting the Great Lakes from a catastrophic oil spill.
Enbridge Energy Partners is part of Calgary, Alberta-based Enbridge Inc.
Enbridge spokeswoman Terri Larson says engineering studies show gaps up to 140 feet are safe. She says Enbridge is taking extra precautions and will begin adding steel supports in August.