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Marathon Pipe Line LLC (MPL) stores crude oil and refined products and safely transports them to refineries, terminals and other pipelines throughout the continental United States. We continuously meet or exceed state and federal regulatory requirements. By following our Integrity Management protocol, using computer monitoring 24 hours a day in our Operations Center, and conducting ongoing Emergency Preparedness and Response training, we dedicate ourselves to the safety of the public and the environment on a daily basis.

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Each year, MPL transports over a billion barrels of crude oil and petroleum products through approximately 6,000 miles of underground pipelines. Our state-of-the-art pipelines are designed to allow us to meet market needs quickly and efficiently.

Use the search function or zoom controls to get a closer view of MPL operated pipelines on the map below. Clicking on a red line reveals more information about each pipeline, including its name, products transported, diameter, and operating pressure.

Terms of Use

Pipeline information provided from MPL's Geographic Information System, 2017. Street map information provided by Google. MPL is providing this map as a courtesy and for general information purposes only. It does not represent that the information contained herein is accurate for any particular purpose, and therefore disclaims all warranties, expressed or implied, including the warranty of fitness for a particular purpose. Independent verification from experts should be obtained prior to any specific use. Recipient accepts full responsibility for any consequences associated with use of this information. This information does not replace calling 811 before digging. As such, you are still required to call 811 before digging.

Download the mobile Pipeline Finder App

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Storage Tanks

We operate aboveground crude oil and product storage tanks across the United States. These tanks are used to store products to meet customer demand by ensuring enough petroleum liquids are available to keep the pipelines in motion.

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Storage Caverns

We operate or provide oversight at four separate active liquefied petroleum gas (LPG) storage facilities: MPLX LP's Woodhaven, Michigan; Neal, West Virginia; and Robinson, Illinois, caverns; and MPC's Canton, Ohio, cavern. Underground storage of LPG in caverns provides a safe and economical method to store large volumes of LPG. Using your mouse, roll over each cavern facility below to learn more.

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Barge Dock Facility

We operate two barge dock facilities located on the Mississippi River. Our Wood River, Illinois, facility has vessel
loading and unloading capabilities. Crude oil loaded at this facility is barged to the Gulf Coast for use in refinery production. Our St. James, Louisiana, facility unloads crude oil vessels into onshore tanks or to third parties
by pipeline for use in refinery production.

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Controls and Management

MPL makes every effort to protect and ensure the safety of the assets we operate. Whether it is following our integrity management protocol, maintaining our operations center 24/7 or training for emergencies, we put controls in place every step of the way.