Enbridge Energy-St. Clair River Project: Oil Pipeline in Maryville, Michigan, USA

Enbridge Energy-St. Clair River Project is an operational oil pipeline facility located in Maryville, Saint Clair County, Michigan, United States. The facility is part of Enbridge's extensive pipeline network, which transports crude oil across the Great Lakes region. As a major pipeline infrastructure asset, it contributes to the energy supply chain connecting Canadian oil sands to U.S. refineries. The facility operates under the regulatory oversight of the U.S. Pipeline and Hazardous Materials Safety Administration (PHMSA) and complies with DOT 49 CFR Part 195 for hazardous liquid pipelines. Typical technical features include cathodic protection systems, leak detection technology, and regular integrity inspections. The St. Clair River crossing is a critical segment, requiring specialized engineering to ensure safe passage beneath the waterway. Environmentally, the pipeline's proximity to the St. Clair River and Lake St. Clair necessitates rigorous spill prevention and response measures. The facility supports regional energy security and economic activity, with its operational status ensuring continuous crude oil flow to downstream markets. Its role in the broader Enbridge Mainline system underscores its significance in North American energy infrastructure.

The pipeline crosses the St. Clair River, a major waterway connecting Lake Huron to Lake Erie, which supports diverse aquatic ecosystems and serves as a drinking water source for millions. Proximity to populated areas and sensitive waterways heightens the need for robust cathodic protection and leak detection. The commodity transported (crude oil) poses spill risks, requiring adherence to PHMSA's integrity management rules.