Where does Port Arthur Gas Pipeline run?

Port Arthur Gas Pipeline runs from Louisiana to Louisiana, crossing United States.

How long is Port Arthur Gas Pipeline?

Port Arthur Gas Pipeline is 406 km long.

How much gas can Port Arthur Gas Pipeline carry?

No design capacity is reported for Port Arthur Gas Pipeline. That is an absent figure, not a zero.

Is Port Arthur Gas Pipeline operating?

Port Arthur Gas Pipeline is shelved, with a reported start year of 2023.

Who owns Port Arthur Gas Pipeline?

Port Arthur Gas Pipeline is owned by Port Arthur Pipeline LLC, as recorded in the current tracker release.

Does Port Arthur Gas Pipeline serve an LNG terminal?

Port Arthur Gas Pipeline passes within 25 km of 1 tracked LNG terminal. Proximity is not proof of a physical connection; each match is listed with its distance and how it was made.

Port Arthur Gas Pipeline: P3590, United States

Route

Port Arthur Gas Pipeline runs from Louisiana to Louisiana. The map draws the tracked route and any LNG terminal within 25 km of it.

Loads about 250 kB of map code and the country outline file.

From: Louisiana
To: Louisiana
Start country: United States
End country: United States
Countries crossed: United States
Onshore / offshore: Not reported
Fuel: Gas
Region: Not reported
Route drawn on map: 269 km
GEM pipeline ID: P3590
Start year: 2023
Shelved (year GEM records): 2021
Cancelled (year GEM records): 2023
GEM wiki page: gem.wiki

Segments

Each row is one row of GEM's pipeline file. Project-level figures repeated on every segment are counted once in the totals above.

Segment	Status	From → to	Length	Capacity	Diameter	Start	Route from
Louisiana Connector Extension Project	Shelved	Louisiana → Louisiana	406	Not reported	1219 mm	2023	GEM's route file

Connected LNG terminals

Terminals whose coordinates fall within 25 km of this route, or whose name matches the pipeline. Proximity is not proof of a physical connection.

Terminal	Country	Import / export	Status	Distance	Matched by
Port Arthur LNG Terminal	United States	Export	Under construction	—	name match

Owners and operators

Stakes as reported by GEM per segment, merged across segments.

Owners

Port Arthur Pipeline LLC100%

Parent companies

In the news

Recent headlines that name Port Arthur Gas Pipeline. Matched by name, so it is approximate. Titles and links only; we store no article text.

See all tracked headlines.

Common questions

Generated from the same tracker fields as the tables above, so the two cannot disagree. Each answer stands on its own.

Where does Port Arthur Gas Pipeline run?: Port Arthur Gas Pipeline runs from Louisiana to Louisiana, crossing United States.
How long is Port Arthur Gas Pipeline?: Port Arthur Gas Pipeline is 406 km long.
How much gas can Port Arthur Gas Pipeline carry?: No design capacity is reported for Port Arthur Gas Pipeline. That is an absent figure, not a zero.
Is Port Arthur Gas Pipeline operating?: Port Arthur Gas Pipeline is shelved, with a reported start year of 2023.
Who owns Port Arthur Gas Pipeline?: Port Arthur Gas Pipeline is owned by Port Arthur Pipeline LLC, as recorded in the current tracker release.
Does Port Arthur Gas Pipeline serve an LNG terminal?: Port Arthur Gas Pipeline passes within 25 km of 1 tracked LNG terminal. Proximity is not proof of a physical connection; each match is listed with its distance and how it was made.

More gas pipelines in United States

Listed in name order among the 515 pipelines tracked in United States, so projects with the same name sit together. A browse aid, not a claim that they are alike.

Background on the technology and the terms used on this page.

LNG against pipeline gas
A pipeline delivers gas at lower cost than LNG over land up to roughly two to four thousand kilometres, beyond which liquefaction wins, and across any significant body of deep water LNG usually wins at any distance.
How LNG works
Liquefied natural gas is natural gas chilled to about minus 162 degrees Celsius, at which point it becomes a liquid roughly 600 times smaller than the gas, so it can be shipped where no pipeline runs.
What terminal status actually means
A project status describes how far an LNG terminal or train has progressed, and the gap between proposed and operating is the single most misread number in the industry.

Cite this page

Reuse is welcome; please name the page and the tracker release it draws on.

Reference

LNG Atlas. (2026). Port Arthur Gas Pipeline: P3590, United States. https://lngatlas.org/pipeline/port-arthur-gas-pipeline-us-p3590/ Data: Global Gas Infrastructure Tracker, Global Energy Monitor, November 2025, CC BY 4.0.

BibTeX

BibTeX entry

@misc{lngatlaspipelineportarthurgaspipelineusp35902026,
  author = {{LNG Atlas}},
  title = {Port Arthur Gas Pipeline: P3590, United States},
  year = {2026},
  url = {https://lngatlas.org/pipeline/port-arthur-gas-pipeline-us-p3590/},
  note = {Data: Global Gas Infrastructure Tracker, Global Energy Monitor, November 2025, CC BY 4.0},
}