Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

The latest general information on the Coronavirus (COVID-19) is available on For PHMSA contact information during the COVID-19 health emergency, please visit our page.

United States Department of Transportation United States Department of Transportation

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

Send Feedback or Ask a Question

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.

Last updated: Tuesday, January 28, 2020