| Putnam Expansion Project | Florida Gas Trans Co | FL | In service 2022 | |
| Questar Fidlar Station Expansion | | UT | In service 2000 | |
| Questar Gas Management - Rendezvous VI Expansion/Mesa Line Loop | Questar Gas Management | WY | | |
| Questar Greasewood Station | Questar Pipeline | CO, UT | 2008–2009 | |
| Questar Greesewood/Meeker Expansion | Questar Pipeline | CO, UT | In service 2008 | |
| Questar Jurisdictional Tap Line (JTL) 113 | | UT | In service 2004 | |
| Questar Kern Expansion | Questar Pipeline | WY | In service 2003 | |
| Questar Lines 1&13 Expansion | | UT, WY | In service 1996 | |
| Questar Mainline (Line 58) Expansion | | UT, WY | In service 1998 | |
| Questar Overthrust Pipeline PF08-34 | Questar Overthrust Pipeline Company | | | |
| Questar Overthrust Point of Rocks Compressor Station | Questar Overthrust Pipeline Company | WY | In service 2010 | |
| Questar Overthrust Rock Springs Compressor Station | Questar Overthrust Pipeline Company | WY | | |
| Questar Overthrust Tie Line 112 | | UT, WY | In service 2003 | |
| Questar Pipeline CP04-347 | Questar Pipeline | UT | | |
| Questar Pipeline CP10-460 | Questar Pipeline | CO, UT | | |
| Questar Pipeline JL 47 Loop Project | Questar Pipeline | UT | 2013 | |
| Questar Pipeline Mainline 104 Project | Questar Pipeline | UT | In service 2001 | |
| Questar Pipeline Project - Main Line 3 | Questar Pipeline | UT | 2011–2015 | |
| Questar Pipeline Southern System Expansion Project II | Questar Pipeline Company Southern System | UT | In service 2007 | |
| Questar Southern Sys 2005 Expansion | Questar Pipeline Company Southern System | CO, UT | In service 2005 | |
| Questar Southern System Expansion | Questar Pipeline | CO | In service 2003 | |
| Questar Utah (Line 40) Expansion | | UT | In service 1998 | |
| Quoddy Bay LNG Project | Quoddy Bay, LLC | | | |
| REX Meeker to Cheyenne Expansion Compressor | Rockies Express Pipeline LLC | CO, WY | In service 2010 | |
| REX Shelbyville Meter Station Expansion Project | ANR Pipeline Company | IN | | |
| REX Zone 3 Capacity Enhancement Project | Rockies Express Pipeline LLC | IN, OH | In service 2016 | |
| RGP Pipeline and Rail Terminal Expansion | | LA | | |
| ROW Maintenance - Station 125+00 | Dte Appalachia Gathering, LLC | WV | | |
| Racket Storage Replacements 2025 | Eastern Gas Transmission and Storage, Inc. | WV | | |
| Racket Storage Replacements 2026 | Eastern Gas Transmission and Storage, Inc. | WV | | |