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.

[1] Loews Corporation (NYSE: L) bought Texas Gas Transmission, LLC in May 2003[2] and Gulf South Pipeline Company, LP in December 2004.

In 2011, Boardwalk acquired the Petal and Hattiesburg natural gas storage companies, which were merged into Gulf South in 2015.

In 2021 the Delaware Court of Chancery ruled for the former partners in the case Bandera Master Fund LP et al v Boardwalk Pipeline Partners LP et al[6] which awarded them $690M, but the case is being appealed.