Boardwalk Pipeline Partners, LP, which conducts business through its primary subsidiary Boardwalk Pipelines, LP and its subsidiaries, is an energy company based in Houston, Texas. It is a master limited partnership operating in the midstream portion of the natural gas and natural gas liquids (NGLs) industry, primarily providing transportation and storage for those commodities. Boardwalk owns approximately 14,365 miles (23,118 km) of natural gas and NGLs pipelines and underground storage caverns having an aggregate capacity of approximately 205 billion cubic feet (Bcf) of working natural gas and 24.0 million barrels (3.8 million cubic metres) of NGLs. Boardwalk's pipeline system originates in the Gulf Coast region, Oklahoma and Arkansas and extends north and east to the Midwestern states of Tennessee, Kentucky, Illinois, Indiana, and Ohio, and Boardwalk's NGLs pipeline and storage facilities are located in Louisiana and Texas.
Boardwalk Pipelines Holding Corp., which is a wholly owned subsidiary of Loews Corporation, owns 100% of Boardwalk Pipeline Partners's capital.