new icn messageflickr-free-ic3d pan white
Piece by piece – assembling the SR 99 tunnel boring machine | by WSDOT
Back to album

Piece by piece – assembling the SR 99 tunnel boring machine

A massive crane positions the central section of the machine that will bore the SR 99 tunnel beneath downtown Seattle. Currently being manufactured in Japan, the machine will be five stories tall and weigh 7,000 tons when crews finish assembling it in late 2012.

6,683 views
4 faves
0 comments
Taken on August 29, 2012