A man wearing jeans, a t-shirt, sneakers, and work gloves inspects his newly planted tree with garden tools nearby, and an excavator in the background.

Crossing Guidelines

Damage prevention is a shared responsibility

Written approval by Trans-Northern Pipelines Inc. (TNPI) is required for many activities conducted within the controlled or prescribed area — a strip of land 30 metres wide on either side of the pipeline, measured from the centre of the outermost pipeline. These activities include:

  • Fence installation or replacement of fence posts.
  • Paving and landscaping.
  • Blasting.
  • Soil removal and excavation.
  • Crossing the right-of-way with heavy equipment or vehicles (trucks, backhoes, graders, tractors, dump trucks).
  • Installing in- or above-ground swimming pools.
  • Planting trees and shrubs.
  • Installation of drainage or irrigation systems.
  • Building or installation of structures, including play structures, sheds, patios, fire pits, etc.
  • Storing of vehicles or materials.

To contact us about planning a project, or to obtain a permit/crossing agreement email [email protected] (Alberta) or [email protected] (Ontario/Quebec).

Once a permit is issued, it will be necessary for us to mark the pipeline and right-of-way limits on the ground before work begins. Our Field Services Inspector will visit the worksite to ensure our pipeline is clearly marked in the area where you will be working. Early cooperation helps to build safe communities, maintain the integrity of our pipeline and foster mutually compatible development for the future.

More information on securing approvals for these types of activities can be found within the Crossing Guidelines (PDF).