A century in the tubes: Liberty Tunnels in its 100th year of operation
For a long while, Mount Washington was a distinct natural barrier separating Pittsburgh from the communities in the South Hills and beyond, but that changed dramatically when the Liberty Tunnels opened to traffic 100 years ago. The tunnels ÎÞëÊÓƵ“ or the tubes, if you prefer ÎÞëÊÓƵ“ connected the ...