Trans-Alaska Pipeline Elevation: Why It's Built 4-6 Feet Above Ground

The Trans-Alaska Pipeline System (TAPS) is elevated on vertical support members (VSMs) along most of its 800-mile route.

Typical height: 4 to 6 feet (1.2–1.8 meters) above ground level.

Reasons for Elevation

• Allows wildlife migration (caribou, etc.) underneath.
• Prevents permafrost thaw from pipeline heat (buried hot pipe would destabilize frozen ground).
• Facilitates drainage and visual inspection/maintenance.
• Reduces environmental footprint on tundra.

In a few areas (e.g., road crossings, avalanche zones), it is buried in refrigerated conduits.