The Two-Mile-Long Tunnel Beneath Seattle Makes Humans Look So Tiny

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One of the major elements of the the Alaskan Way Viaduct Replacement Program will be the gigantic SR 99 tunnel which will host a double-deck roadway under downtown Seattle . In this stunning new photo, you are looking south inside the tunnel dug by Bertha, the SR 99 tunneling machine . It is hard to say less than this tunnel is really enormous. Read more…

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The Two-Mile-Long Tunnel Beneath Seattle Makes Humans Look So Tiny

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