Pittsburgh’s light rail expansion project dubbed the North Shore Connector Project has passed underneath the Allegheny River despite some earlier troubles. The cut and cover tunnel portion is complete, and the TBM bored portion of the tunnel is is approximately 80% complete. There is a short video and more details at the Pittsburgh Post-Gazette. (Photo by Bob Donaldson/Post-Gazette)
Thanks to approximately $100 million from President Bush’s proposed 2009 budget, the $1.8 billion project creating a light-rail line from downtown Seattle to the University of Washington is likely to break ground some time this year. The project will involve twin bored tunnels on the order of 3 miles in length. It is scheduled to open for use in 2016.
There is another notable tunnel project associated with the Seattle Light Rail, known as the Beacon Hill tunnel which I have blogged about before.