How long (how much growth can be accommodated) at BOS before it needs a new runway?
Seems like it'd raise issues of
1) How much harbor would need filling
2) Being one-sided ("only over the harbor" similar to 14-32)
3) Whether it is needed for a particular weather condition or just throughput, generally
Not really an issue
Airside capacity is adequate -- its gates and passenger amenities that need to be enhanced
Logan is well below its peak number of flight operations achieved a number of years ago before the One-Way Runway became operational in
yr ops passengers cargo
1998 507,449 26,526,708 803,841,263
1999 494,816 27,052,078 824,167,999
2000 487,996 27,726,833 852,347,154
2001 463,125 24,474,930 744,797,296
2002 392,079 22,696,141 789,610,008
2003 373,304 22,791,169 744,838,287
2004 405,258 26,142,516 759,274,990
2005 409,066 27,087,905 741,517,308
2006*1 406,119 27,725,443 679,068,089
2007 399,537 28,102,455 632,449,775
2008 371,604 26,102,651 587,772,302
2009 345,306 25,512,086 517,557,182
2010 352,643 27,428,962 546,379,403
2011 368,987 28,907,938 529,212,783
2012 354,869 29,325,617 525,392,642
2013 361,339 30,218,631 538,192,790
2014 363,797 31,634,445 585,459,955
2015 372,928 33,449,580 575,781,601
2016 391,222 36,288,042 616,933,699
2017 401,371 38,412,419 679,407,977
2018 424,024 40,941,925 704,200,557
2018 [0-4]*2 125,788 11,887,401 220,170,141
2019 [0-4]*3 129,623 12,531,398 220,235,356
*1 -- One-Ray Runway 14/32 becomes operational Nov 2006
*2 -- January through April 2018 for comparison
*3 -- January through April 2019 [latest available data]