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Mount MacDonald Tunnel
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Mount MacDonald Tunnel

tunnel, British Columbia, Canada
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Quick Summary

The Mount MacDonald Tunnel is a railway tunnel located in British Columbia, Canada. It is situated beneath Rogers Pass in the Selkirk Mountains and was completed in 1988. This tunnel is 9.1 miles (14.6 km) long, making it the longest tunnel in the Western Hemisphere. Its primary purpose is to reduce track grades for westbound trains, thereby flattening the transit through the Selkirk Mountains to just under 1 percent. This engineering feat was undertaken by the Canadian Pacific Railway to improve efficiency and overcome the steep grades previously encountered in the area.12

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2 Britannica Sources
  1. Rogers Pass
  2. railroad - Canadian railroads

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