The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Scheduled, per Massport[5]: "Runway 9-27 will be closed, with only very limited availability, for 75 days starting August 31", "with work expected to be completed before Thanksgiving" - 75 days ends 13 November.
NBC Boston[4] from the site: the bridge deck for a fully loaded 747, two construction years of 75 days each, Massport's[1][5] Sarah Dennechuk on reopening after day 75.
Revere Journal carries Massport's[1][5] phase-two notice for neighbouring communities: 75 days from 31 August, pile driving in approved daytime hours.
Boston.com: phase two begins 31 August, closing Runway 27 for about 75 days, finishing before Thanksgiving; capacity and delay impacts.
Massport's[1] phase-one notice: two 75-day closures, the first from 2 September 2025 and the second after 1 July 2026, to install EMAS at the end of Runway 27.
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