Extreme Cold Emergency and MBTA Diversions: Boston Commute Update for January 23

Extreme Cold and Strategic Diversions: Friday Commute Update

Commuters in Boston should prepare for a challenging Friday, January 23, 2026, as a citywide Cold Emergency takes effect. Mayor Michelle Wu has issued the declaration through Sunday, January 25, due to dangerously low temperatures and wind chills expected to dip between -10 and 0 degrees. While major highways currently remain clear of major weather-related accidents this morning, the extreme cold and specific local transit projects will impact several key routes throughout the day.

Roadwork and Localized Traffic Alerts

In Allston, commuters should expect a continued presence of construction crews on the Cambridge Street bridge over I-90. While MassDOT recently reconfigured the work zone to improve access for cyclists and pedestrians, the narrow lanes and equipment may still cause minor morning bottlenecks for drivers heading toward the interchange.

In the Fenway neighborhood, expect localized congestion and an increase in ride-share activity near the 400 block of Park Drive. Time Out Market is permanently closing its doors today, which is expected to draw a higher volume of visitors throughout the afternoon and evening. Elsewhere, the Canterbury Street Bridge in Roslindale remains closed to vehicular traffic following a recent inspection; drivers are advised to continue using the primary detour route via Hyde Park Avenue and Cummins Highway.

MBTA Service and Transit Changes

Public transit riders face several active alerts and diversions today:

• Green Line: The lobby-to-platform elevator at Arlington Station remains out of service for maintenance through the end of the day. A dedicated shuttle bus is operating between Arlington and Copley to assist riders with mobility requirements.
• Bus Route 70 and Route 1: Ongoing construction on Massachusetts Avenue near Sidney Street has forced temporary stop closures. Riders should utilize the temporary stops at Sidney Street and Green Street through the end of the month.
• Bus Route 11: An outbound detour remains in effect on weekdays from 7:00 AM to 4:00 PM for construction, impacting service along West 7th Street.
• Blue Line Advisory: While service is running normally today, be aware that a full suspension between Bowdoin and Airport is scheduled for tomorrow and Sunday to facilitate critical tunnel inspections.

Commuter Safety in Extreme Cold

With the Cold Warning in effect, those waiting on outdoor platforms for the Commuter Rail or Green Line are urged to dress in heavy layers and limit skin exposure. The MBTA is monitoring infrastructure closely, as extreme cold can affect signal systems and rail integrity. For motorists, ensure vehicles have adequate fluids and battery charge, as breakdown risks increase significantly in these temperatures. If you must travel, allow for extra time to reach your destination safely.