octr202 wrote:A big question, though, if you run the Blue Line from Govt. Ctr. to Kenmore, north of the Green Line, is how do you connect to the Red Line. It would be a shame to start this project and miss this connection. Creating a Park St. Even Further Under would be great from a connectivity standpoint, but would require totally redoing the Blue Line at GC (or eliminating it -- you would still have a GL connection at Park St.). The other option is to go up to Charles MGH, and then take a hard left and go down Charles St. to about Beacon St. and then head west. Regardless, it'd be pretty tough to do.
If the Blue Line cars weren't so small, you could perhaps create a junction with the Red Line under Beacon Hill, run them thru Charles and Kendall, and then split off into a new tunnel towards Kenmore -- but even with fully compatible equipment, this is really up there with something beyond Big Dig complexity...
Ron Newman wrote:Extending the Blue Line to Charles Under wouldn't require digging under anyone's property, as it would be directly under Cambridge Street. You wouldn't have to do any deep boring either, just cut-and-cover. This is all solid ground, too, not landfill.
octr202 wrote:In a lot of places, deep bore is probably preferable in the city -- less surface disruption. I can't see many people being happy with a curb to curb excavation of Charles St. (especially after the reconstruction now) for a long time to come.
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