Pipeline Mileage Data 2026: More Than 3.3 Million Miles

More than 3.3 million miles of regulated pipelines are covered by the U.S. pipeline safety program, according to PHMSA. The mileage figure spans system types. It is not a right of way parcel count or an active project count.

The inventory uses public agency pages and preserves the meaning of each measure. Landman Business treats every number as a dated observation, not as a promise about a project, market, or staffing result.

Pipeline Mileage Data 2026: Key findings

What the primary measure means

PHMSA mileage covers regulated systems and is grouped by pipeline type. The national figure is infrastructure context; it is not a count of easements, tracts, projects, or landowner contacts.

How records can be compared

Compare mileage only after system type, operator category, state, year, and reporting definition agree. FERC and state sources add regulatory context but do not automatically use the PHMSA denominator.

Decision boundary

Mileage can frame the scale of record administration without estimating the number of land files or hours required. Parcel work begins with the relevant right of way instruments.

Data fields to capture

• Pipeline system type
• Mileage and facility summaries
• Operator and state views

Also retain publisher, source URL, stable record identifier, covered period, access date, and revision status. Store interpretation in a separate notes field so the source observation remains unchanged.

Interpretation limits

• Mileage is not parcel count.
• Regulated categories have different definitions.
• Published totals can be revised.

Mileage can frame the scale of record administration without estimating the number of land files or hours required. Parcel work begins with the relevant right of way instruments.

Review questions

A reproducible review of Pipeline Mileage Data 2026: More Than 3.3 Million Miles should answer these questions before a value enters a client work file:

• Which public authority defines Pipeline system type, and does the saved page state the same covered period as the copied value?
• Can Mileage and facility summaries be traced to a stable record, table, or download rather than an unlabeled search result?
• Does Operator and state views use the same unit, geography, event status, and revision stage as the proposed comparison?
• Is the observation being used only for the administrative purpose that the source supports?
• Are every missing field, definition conflict, and unavailable primary record visible in the exception log?

Answering no to one of these questions does not justify filling the gap. It identifies a verification task or a decision that belongs with the authorized client reviewer.

Data sources and methodology

This article reviewed 10 named public sources on July 16, 2026. The method identifies the primary publisher, records what each page covers, and avoids combining measures until period, unit, and geography agree.

The inventory does not estimate missing values. A blank, suppressed cell, unavailable county index, or unpublished period remains unresolved until a primary record supports it.

Practical research workflow

1. Select the PHMSA mileage table and system type that match the question.
2. Capture year, geography, operator, and regulated category.
3. Keep FERC proceeding data separate from safety mileage totals.
4. Use mapping systems as locators within their stated access limits.
5. Link any tract inquiry to the recorded easement and legal description.

The final file should let another researcher locate the same source, understand the selected definition, and see every unresolved exception without relying on an undocumented assumption.

Frequently asked questions

Why use multiple official sources?

The sources separate safety reporting, operator identity, mapping, federal and state regulation, and recorded right of way evidence. A pipeline map is not title evidence.

Does this inventory replace title review?

No. Public statistical and regulatory sources provide context, while parcel and title conclusions require the controlling records for the jurisdiction.

How often should the page be checked?

Check the source on its stated release schedule and verify the article at least annually. Update the verification date only after opening the source and reviewing the affected statement.

Conclusion

The mileage figure spans system types. It is not a right of way parcel count or an active project count. Use the source table as a starting point, then preserve the primary record behind every case level conclusion.

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Sources

1. PHMSA, Pipeline Mileage and Facilities
2. PHMSA, Pipeline Incident 20 Year Trends
3. PHMSA, Pipeline Data and Statistics
4. National Pipeline Mapping System
5. PHMSA, Operator Information
6. Federal Energy Regulatory Commission, Natural Gas
7. Federal Energy Regulatory Commission, Oil
8. Railroad Commission of Texas, Pipeline Safety
9. Bureau of Land Management, Rights of Way
10. Bureau of Land Management, General Land Office Records