It was originally called the 109th Street Subway, but for most of its life, it was called the Rathole. The 168-metre tunnel that burrowed under the Canadian National Railway tracks between 104th and 105th Avenues opened 75 years ago this week and was to serve as a connection to downtown Edmonton for the next 72 years.

The tunnel was originally proposed in 1926 as a way to move traffic across the two dozen tracks between 101st and 116th Streets and the call for tenders in January 1927 specified a three hinged reinforced concrete arch with a clear span of 32 feet.

Click here to read the full article (Article source: Real Estate Weekly).