[2][3] Prior to the COVID-19 pandemic, some morning rush-hour trains on the Antioch line short turned at Montgomery to provide additional Transbay service.

From February 16, 2020, to September 20, 2020, and again from March 22, 2021, to August 1, 2021, Dublin/Pleasanton line trains terminated at Montgomery on some Sundays due to single-tracking in the Market Street Subway.

[24] On September 13, 2021, the center portion of the mezzanine level and the southern entrance east of 2nd Street were closed for construction of a BART traction power substation.

[25] Bathrooms at underground BART stations were closed after the September 11 attacks in 2001 due to security concerns.

The bathroom at Montgomery station reopened on June 28, 2022, after a renovation, with an attendant on duty during all operating hours.

[26] Under the planned Better Market Street project, the inbound F stop would be discontinued to reduce travel times.

[28] Additional Muni (14, 14R, 14X), Golden Gate Transit (30, 70, 101, 101X), and SamTrans (292, 397, 398, FCX) bus routes run on Mission Street, one block away.