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The Société de transport de Montréal (STM) is undertaking a sweeping overhaul of its bus network—the largest redesign in the organization’s history.
With the goal to make trips easier, the bus network in the Centre-Nord and the West Island has been reworked to better connect buses, the métro, trains, taxibuses and the REM.
Reshaping nearly 80 routes across six boroughs and nine municipalities on the Island of Montreal, the redesign is timed with the arrival of a new branch of the Réseau express métropolitain (REM).
Read: REM’s West Island expansion launches four new stations May 2026
The plan aims to elevate the customer experience by aligning bus service with both current and future mobility needs.
Among the most notable improvements: increased connectivity with the REM, enhanced service on 15 routes (including expanded evening and weekend coverage), the addition of eight new routes, and streamlined service across 24 lines to offer more direct connections.
It represents the largest network redesign in the organization’s history, reflecting a broader commitment to modernizing public transit and ensuring it works in tandem with major infrastructure projects like the REM.
When is the Montreal bus network redesign launching?
Starting May 18, 2026, the STM bus network is changing with the arrival of the REM.
Check out: Montréal-Trudeau REM station 85% complete
What will my new Montreal bus route look like?
Use the route simulator linked here to preview future journeys in the Centre-Nord and the West Island.
More key facts about the network redesign:
+80 bus lines making it easier for over 375,000 people to get around
3,411 stops in service including 246 new ones to bring us closer to you
14,000 simplified transfers with one less bus to take
29,000 people can now reach a high-frequency bus line within a 750-metre walk
67,000 trips shortened by at least 5 minutes
For more information about the bus network redesign, click here.
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