The Great Northern Railway opened up the new Cascade Tunnel to daily traffic, and announced this fact to the world (or at least a significant number of radio listeners across North America).
A great deal of information about the construction of the
Cascade Tunnel can be found in other sources. The Great Northern Railway Historical Society has several “Reference Sheets” (articles),
written by members of the society, that are available for purchase through the
GNRHS Company Store . Several of these Reference Sheets address aspects of
the GN’s challenges and successes in conquering the Cascade Mountain range in
Washington state. However, I’m going to go ahead and detail a few key facts about the new tunnel
and its improvements over the GN’s old line through the Cascades, which originally
included switchbacks and later a tunnel (the “Old Cascade Tunnel”) of about 2
miles.
- Length of tunnel: 7.79 miles (longest railroad tunnel in the Western Hemisphere, at the time it was constructed)
- Reduction in elevation achieved with the new tunnel: 502 feet
- Reduction in curvature achieved with the new tunnel: 3,674 (over ten full circles)
The new tunnel eliminated use of over 19,000 feet of old tunnels, and nearly 40,000 feet of snowsheds designed to protect trains from avalanches. Completion of the new tunnel saved the railroad about $600,000 annually in snow-clearing expense.
The plan to build the Cascade Tunnel was approved by the GN’s board of directors on Thanksgiving Day, 1925. Work began less than a month later, on December 14th. Excavation on the main tunnel was completed on December 8, 1928. By December 30, track was laid through the tunnel, and ballasting was completed on January 6, 1929. This coincided with the 36th anniversary of the driving of the last spike of the Great Northern, just a few miles from the west portal of the new tunnel.
On the day of the opening of the new tunnel, a special train
filled with about 270 people departed Seattle at 1 o’clock in the afternoon.
This was the last passenger train to ever travel the GN’s old route that rolled
through the tiny mountain hamlets of Tye (formerly Wellington) and Cascade
Tunnel. At Berne, near the east portal of the New Cascade Tunnel, the train was
combined with another train from the east (carrying another 125 or so people), forming
a 24-car train poised to be the first passenger train to travel back westbound
through the new tunnel.
The event was broadcast over a coast-to-coast network of NBC
stations – a radio network established on December 28, just two weeks prior to
the Cascade Tunnel broadcast.
The NBC broadcast of the opening and dedication of the
Cascade Tunnel was recorded on a set of seventeen 78 RPM records by the Victor
Talking Machine Company. That recording is one of only a handful that still exist
regarding the Great Northern Railway and their grand advertising campaign, the Empire Builders radio series.
Hi Scott, Congrats on the new blog. Very nice work! You are certainly off to a good start. I missed the Boeing show last November and, of course, that means missing your excellent table and a chance to chat with you. Hope to see you this coming November for sure. I have been blogging for a while now, John's Island, I call it. I had a tough time figuring out a name especially since I post a variety of things. Finally decided to create a "virtual island" ... a place for John's posts. I will look forward to your next post. Take care. John Robinett
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