Tunnel Vision Complete As Manhattan Bedrock Crumbles

(New York, NY - Matthew Schuerman, WNYC)  I was there.  At about 4:15 p.m. Eastern time, a giant boring machine drilled through the last of Manhattan bedrock to complete the tunnel for an extension of the Number 7 train.  The event marks a political milestone for Mayor Bloomberg.  It's also expected to develop Manhattan's Far West Side in the same way London supported Canary Wharf with an extension of the Jubilee Line.

For the past year, a pair of machines has been digging the mile-long tunnel, starting at 26th street and 11th Avenue and ending, today, underneath the Port Authority Bus Terminal at 8th avenue and 41st street.  There the extension connects with the current number 7 subway line.   Here's more of what the big moment was like from our broadcast of All Things Considered this afternoon.