description Cascade Tunnel (old) Overview
The original Cascade Tunnel was a 2.63-mile Great Northern Railway tunnel through Washington's Cascade Mountains, completed in 1900 as part of the railroad's route over Stevens Pass. Difficult ventilation and exposure to avalanches, including the 1910 Wellington disaster near the west portal, contributed to its replacement by the eight-mile Cascade Tunnel, which entered service in 1929. The old tunnel and its approach line were subsequently abandoned.
help Cascade Tunnel (old) FAQ
What was the original Cascade Tunnel used for?
The original Cascade Tunnel was built for the Great Northern Railway. It carried the railway route through Washington's Cascade Mountains over Stevens Pass.
When was the old Cascade Tunnel completed?
The original tunnel was completed in 1900. It was about 2.63 miles long, or roughly 4.2 kilometres.
Why was the original Cascade Tunnel difficult to operate?
Railway ventilation was difficult inside the long tunnel, and the route was exposed to heavy mountain weather. Avalanches were a major danger near Stevens Pass, including the 1910 Wellington disaster.
Was the Cascade Tunnel connected to the Wellington disaster?
Yes. The 1910 Wellington disaster occurred near the railway route at Stevens Pass, where avalanches caused a deadly accident. The event highlighted the severe operating risks around the original tunnel.
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