ENR reports that a Tunnel Boring Machine or TBM is stuck for the second time in two weeks on Pittsburgh's light rail expansion project dubbed the North Shore Connector Project. As we described in a previous post, the project will consist primarily of a tunnel underneath the Allegheny River.  The drilling began the week of March 3 and has been progressing at a rate of 30-ft/day or 5-ft/day faster than the original goals. Read on for a location map of the project, or download the Google Earth KMZ file showing the project area. (File photo of TBM)

Project Map 

Quick Facts

• Project website
• Port Authority of Allegheny County website
• 80% Federally funded
• Scheduled to open in 2011
• The tunnel-boring machine has dug about 150 feet so far and will commence digging the week of March 3
• Tokoyo-based Obayashi Corp. hired for $156.5 million to dig the tunnels
• Pittsburgh has over 2,000 bridges! Ironic that they have chosen tunnels for this project, huh?
• Article about project cost overruns at PittsburghLive.com

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• Ontario-geofish Blog

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