Brooklyn J and M Subway Service to Change This October
Commuters in Brooklyn will see modified train schedules and shuttle bus service starting October 13, 2026.
Updated on Oct. 8, 2026 in Car Maintenance
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New York City Transit will implement subway service changes in Brooklyn beginning October 13, 2026, to facilitate critical track infrastructure repairs. Regular J and M line service will be disrupted through late November 2026 as crews replace outdated equipment.
Why it matters
Replacing these 29-year-old track switches is essential to maintaining the reliability and safety of the transit network. The scheduled maintenance ensures long-term service consistency for residents, though it requires temporary adjustments to daily commutes.
Crews will work on track switches at the Marcy Avenue station, which have reached the end of their 29-year useful life. The project impacts five weekends of service and includes parking restrictions on Broadway between Marcy Avenue and Keap Street.
The players
New York City Transit
The public agency responsible for the operation and maintenance of the city's extensive subway and bus network.
The details
The infrastructure work involves the manual replacement of aged track switches near the Marcy Avenue station. During weekend construction, the M train will operate in split sections with 20-minute headways, and the MTA will deploy free shuttle buses between Myrtle Avenue-Broadway and Delancey Street-Essex Street to move passengers. Weekday riders will see J trains run locally between Marcy Avenue and Myrtle Avenue-Broadway from 10:00am to 3:00pm.
Timeline
Service changes begin on October 13, 2026.
The first weekend of disruptions starts on October 17, 2026.
Work pauses for the New York City Marathon on the weekend of October 31 to November 1, 2026.
Regular service is expected to resume in late November 2026.
The Home Front
The transit authority is prioritizing the replacement of aging infrastructure to prevent long-term service degradation. This work follows a pattern of localized maintenance projects aimed at updating critical equipment that has reached the end of its useful lifespan.
If you drive in Williamsburg, plan for temporary parking restrictions along Broadway between Marcy Avenue and Keap Street on weekends through late November. Commuters should check official transit schedules before leaving home, especially when relying on weekend shuttle buses.
The takeaway
Proactive infrastructure upgrades like these switch replacements are necessary to avoid unplanned service failures in the future. Residents should mark their calendars for the October 31, 2026, weekend break and monitor official transit alerts for any potential schedule shifts during the construction period.
Further reading
Learn more about local transit impacts in our Car Maintenance section.
Source note: This article includes information reported by BKReader.
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