The Slave Geological Province Access Corridor will support road access, hydro transmission lines and communications infrastructure into areas of significant mineral potential.


  • The corridor would connect the Slave Geological Province and its vast mineral deposits to points south and ultimately to a deep-water port in Nunavut.
  • An all-weather road would adapt to the increasing challenges of climate change by replacing winter roads with more reliable access.
  • Improved access would reduce operating costs for existing mines, and facilitate resource exploration and development activities.
  • All-weather access would support a green economy by enabling development of the Taltson Hydro Expansion  and Transmission Line project. It would also enable the extraction of base and precious metals required for low-carbon technologies.


  • A corridor providing the greatest economic benefit has been chosen based on the results of mineral potential and routing options studies and analysis, and a financing business case analysis is underway. 
  • On November 6, 2017, the Government of the Northwest Territories submitted a comprehensive proposal to advance the project under Transport Canada’s National Trade Corridors Fund.
  • Five construction phases have been identified:
    1. Replacement of the Frank Channel Bridge
    2. Environmental Assessment and Planning
    3. Highway 4 to Lockhart Lake
    4. Lockhart to Lac de Gras (diamond mines)
    5. Lac de Gras (diamond mines) to the NWT/Nunavut border
  • Next steps include completing a business case assessment, undertaking environmental studies, and finalizing engineering and design work.
Click  HERE to download the project backgrounder.