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[quote]QUOTE: Originally posted by PNWRMNM I can suggest two reasons why they never daylighted Boyleston Tunnel. No need and no money. While I have not walked or rode through the tunnel I am familiar with the local geology. The tunnel is in basalt rock. Basalt is a very hard material and will hold a virtually vertical face for thousands of years. The tunnel was only in use about 70 years, a blink of the geological eye. I suspect the tunnel is unlined, as was the one on the GN Mansfield branch also in basalt, which I have both walked and rode through. The Milwaukee went bankrupt three times in the 20th century. They did not have money for necessities, let alone daylighting a tunnel in hard solid rock just for the entertainment value of it. Mac [/quote] The question wasn't why didn't they daylight Boylston, it is did they ever consider daylighting Boylston. Basalt tends to be columnar, and can fracture easily. And of all the reasons railroads daylight tunnels, I doubt any of them do so "just for the entertainment value of it."
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