We have been out in Portland for over a year now. The reason we got relocated to Portland was for the "Big Pipe" project. It isn't really a pipe, but a tunnel. In order to build the tunnel a crucial piece of equipment is necessary, the tunnel boring machine (TBM). Ours was built in Germany at the Herrenknecht plant. It was shipped in February and has been slowly arriving to the site. We put it in the shaft in the end of February and have slowly been building it. It costs around 12 million dollars and all said and done will be 280 feet long. It will cut a 24' diameter tunnel ranging from 90' to 150' under ground. As it goes through the ground it sets precast segments which is the liner of the tunnel. To see more how this works, click on "The Job" link to the right. Here are some pictures of the machine that were taken yesterday. We always take a picture with someone in them for size reference.

Pictures top to Bottom:

Kyle (My engineer) standing on the TBM during construction

Me standing next to the TBM in the hole. Pretty big piece of machinery.

Me standing next to the cutter head. This is the piece that will cut through the earth creating the hole for the tunnel.

Looking down the 125' shaft at "Rosie", the TBM. This is the front can which will have the cutter head attached to the front. It is called "Rosie" for the City of Roses.

Kyle standing at the tail end of the TBM.