STM bus map to change in West Island
The STM bus network will be changing as of May 18 when the Anse à l’Orme REM opens, and not just in the West Island. The list of routes changing is a long one (but the map being used to show certain routes is disorienting, with west at the top).



Joey 10:57 on 2026-04-21 Permalink
That comparison tool is needlessly complicated. Can anyone figure out what the difference in, say, the 51 route is?
MarcG 11:05 on 2026-04-21 Permalink
If you download the “Understanding the redesign -> Summary document” at the bottom of the page it has more details than the individual route documents. For the 51 for example, on page 41, it says “Qu’est-ce qui change? Aucune modification de parcours, Rééquilibrage des fréquences sur la ligne 51 au profit de la ligne courte (51X) entre la gare Montréal-Ouest et la station Snowdon”. Pretty cumbersome.
jeather 12:20 on 2026-04-21 Permalink
Oh they might be upgrading the buses near my work so I can take the metro again.
Joey 14:06 on 2026-04-21 Permalink
Thanks, MarcG. Not sure why they couldn’t represent that visually, but whatever. More to the point, it would go a long way to distinguish between the kinds of changes on that summary table, rather than treat “addition of extra buses for part of the route” with “completely new trajectory”… That 51X is a good idea; Snowdon Metro is a huge bottleneck for that line.
EmilyG 19:02 on 2026-04-21 Permalink
I think the route for each bus is shown as a left-to-right line, which would lead to differing orientations of the map (with different cardinal directions at the top.)