Dshoot. I like the idea, bu two major problems.
1. You'd need to basically shut down the airport to build the new one. So Boston would need to survive without a major airport for 3-5 years.
2. I HATE the "Grand Terminal" model. Maybe this is just because I spent a summer traveling to Atlanta for work and Hartsfield Jackson would routinely have 90 minute security lines that wrapped chaotically through the grand terminal.
1. No; the airport redevelopment compliant to my proposal could be done in such a way to mitigate for current capacity throughout construction and have little negative impact on current operations. Here's how I would phase construction:
A) Shutdown service on runway 15L/33R. Pave cross section of existing 4L/22R runway and future realigned 33L/15R runway (just the part where they will intersect in the future). Once this is completed, the existing 4L/22R runway will remain operable indefinitely.
B) Fill in wetlands north of Logan and relocate/add all cargo/industrial airport uses from south side of airport to north side; construct new international package handling facility for Cathay Pacific/DHL/FedEx/UPS/jetBlue Cargo.
C) Begin landfill and construction of realigned 14/32 runway (the southern 13,000-foot long runway). Siphon earth from existing southern land site into harbor for east end of runway, thereby restoring some of the original harbor.
D) Upon completion of new 14/32 runway and existing service of 4L/22R runway, discontinue service on all other runways. If London Gatwick Airport can operate as a single runway airport and still handle up to 35 million passengers annually, there's no reason Boston can't do the same with 14/32 and the 4L/22R back-up and comparably similar passenger traffic (29.3 million in 2012).
E) Begin construction of Airport Link People Mover/Subway, International Terminal (2), and Terminal 3. Also begin filling in harbor for future phases of terminals 4, 5, and 6. Create temporary Airport Link station entrance between existing Terminals B & C. Create temporary link & security gates from Terminal B to Airport Link.
F) Relocate all JetBlue, Cape Air, American, Virgin America, and other International flights (i.e. B, C, and E airlines) to new International Terminal (2) and Terminal 3. Begin deconstruction of Terminals C and E, and begin constructing NE wing of the grand terminal. Once E is deconstructed, construction of the new 33L/15R runway can begin ( *note that we previously constructed the cross section on the existing 4L/22R runway as not to impede its use this late in the construction process).
G) Relocate all airlines from terminal A to the newly completed NE wing of the grand terminal. Begin demolition of terminal A; commence construction of SW wing of the grand terminal. New 33L/15R runway becomes operable. Begin constructing Terminals 4, 5, and 6 based on demand for passenger traffic at airport; only open these terminals once SW wing of the grand terminal is complete.
H) Reroute airport drop-off roadway to future appropriate alignment. Begin construction of 10-level parking garage SW wing, new air traffic control tower, and 1,000-room hotel atop garage. Build shallow channel and ferry terminal connected to grand terminal via landscaped SW garage walkway.
I) Once SW wing of garage is complete, deconstruct existing garages and build NE wing of 10-level parking garage and additional 1,000-room hotel atop garage (2,000 total hotel rooms).
J) Grand terminal complete; 33L/15R, 14/32, and emergency 4L/22R operable; terminals 2, 3, 4, 5, 6 and grand operational; garage, hotel, MBTA service, and ferry up and running. Capacity at Logan Airport doubles from 35 million passengers/year to over 70 million passengers/year, and cargo operations are booming.
2. I agree that the grand terminal concept failed at some airports, but it works amazingly at the places that got it right. If you get a chance to ever fly into Hong Kong, Bangkok, Denver, or Dulles (among others), you'll see what I'm talking about.
Sorry for the excessively long post. I'm just trying to prove that the idea can work. There's gotta be an industrial engineer or something reading this that can assess and back me up on this. It would be wonderful for the city if this ever happened.