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Pipeline Mileage and Facilities

Since 1970, PHMSA has collected data about pipeline infrastructure from operators. The annual report formats have changed several times over the years. Since 2010, PHMSA has collected mileage data for five pipeline system types. The initial year of annual report collection is shown below:

Mileage Data
Gas Distribution 1984Hazardous Liquid 2004
Gas Gathering 1984Liquefied Natural Gas (LNG) 2010
Gas Transmission 1984Underground Natural Gas Storage (UNGS) 2017

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2010+ PIPELINE MILES AND FACILITIES – Each report initially shows all States, the District of Columbia, and Puerto Rico, but can be limited to a single State. Links for calendar year in the reports will open a new screen showing mileage and facilities for each pipeline operator.

ANNUAL REPORT DATA ACCESS – Mile and facility data submitted to PHMSA on annual reports from pipeline operators.

ANNUAL REPORT SUMMARY - Annual Report Mileage Summary Statistics

PIPELINE REPLACEMENT UPDATES – DOT's "Call to Action" on highest-risk pipeline infrastructure. Trend lines of highest-risk pipelines since 2005.

Updated: Monday, November 4, 2019