| Bear Creek Base Gas Conversion Project | Bear Creek Storage Co | LA | In service 2013 | |
| Bear Creek Pipeline | | ND | | |
| Bear Den Plant / Bear Den West Pipeline | Crestwood Equity Partners LP | ND | In service 2018 | |
| Bear Run Mine Relocation Project | Texas Gas Transmission, LLC | IN | | |
| Beaty Loop Project | | WV | | |
| Beauregard Parish Compressor Station (Louisiana Connector) | Port Arthur Pipeline LLC | LA | In service 2026 | |
| Beaver Residue Line (acquisition | Regency Field Services LLC | OK | | |
| Bechtelsville Compressor Units Replacement Project | Texas Eastern Transmission, LP | PA | | |
| Beech Hill Well Conversion Project | National Fuel Gas Supply Corporation | NY | | |
| Beirne Compressor Station Replacement | Centerpoint Energy Gas Transmission | | | |
| Belford Compressor Station & Hager LP Pipeline | Antero Midstream LLC | WV | | |
| Belford HP Pipeline | Antero Midstream LLC | WV | | |
| Belford Jumper LP Pipeline | Antero Midstream LLC | WV | | |
| Bell South Telecommu coastal use permit P19970519 pipeline | Bell South Telecommu | LA | | |
| Belle Fourche Loop Pipeline Project | WBI Energy Transmission, Inc. | SD | 2014–2015 | |
| Belle Fourche Pipeline 10-Inch Crude Oil Pipeline - Billings, Dunn, Stark | Belle Fourche Pipeline Co | ND | | |
| Beluga Transmission Pipeline Relocation Project | Alaska Pipeline Company | AK | Started 2004 | |
| Bengal Pipeline coastal use permit P20041583 pipeline | Bengal Pipeline Company, LLC | LA | | |
| Bengal Pipeline coastal use permit P20081539 pipeline | Bengal Pipeline Company, LLC | LA | | |
| Bennington Compressor Station Project | Enogex Inc. | OK | In service 2011 | |
| Bennington Compressor Station Project Phase I | Enogex Inc. | OK | In service 2009 | |
| Berne Compressor Station | Enbridge | OH | | |
| Bernville Compression Station Project | Texas Eastern Transmission, LP | PA | In service 2021 | |
| Berthold Station Line Reversal - Ward County | North Dakota Pipeline Company LLC | ND | | |
| Bessemer Calera Expansion Project | Chattanooga Gas Co | AL | 2024–2025 | |
| Betterment Project | Columbia Gas | OH | | |
| Bi-directional Pipeline Conversion | Midwestern Gas Transmission Company | IL, IN | In service 2010 | |
| Big Bend Project | Florida Gas Transmission Company, LLC | | | |
| Big Pine System Extension | Columbia Midstream | PA | | |
| Big Sandy Pipeline Phase I | Equitrans, L.P. | KY | In service 2008 | |