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Having reached the Pike northbound merge, we can see what the banner is trying to explain. The daylight far down at left comes from the portal for Ramp C of the South Bay Interchange, where I-90 EB traffic (coming from Copley Square and points west) makes a wide left turn onto I-93 NB. The artificial light to the right comes from the ramp serving future I-90 WB from South Boston. A curious feature of the design is that traffic destined for I-93 splits off I-90 EB in South Boston, and there will actually be I-93 entrance ramps in Southie which do not connect to the Turnpike at all. (No word on whether our toll increase is paying for these tunnel sections.) What's the one movement out of 29 that's not provided in the South Bay Interchange? I-93 SB to South Boston and Logan. Airport traffic from points north is expected to take the Callahan instead of the Teddy, and I guess traffic to the Convention Center will just have to make do with local streets.
Copyright 2002, Garrett A. Wollman. All rights reserved. Photograph taken 2002-08-25.