Bridge without track room “is a mistake”

The mayor of Ste‑Anne‑de‑Bellevue says that replacing the Île‑aux‑Tourtes Bridge without including a public transit lane, possibly for a future REM extension, is a serious mistake as we face climate change. We’ve discussed this before, not so long ago.

But is it? I was struck by responses below to a brief post about parking in Verdun. Verdun, a part of Montreal with three metro stations inside its borders and two just outside them, plus several bus routes, should be as accessible by public transit as anywhere. But there were objections right away to my suggestion that workers avoid the parking issue by taking the bus or metro:
1. Many of them are probably commuting FROM somewhere with inadequate transit.
2. Teachers often have to carry a lot of materials with them.
3. Workers often have to pick up children and groceries after work.
4. Not everywhere in Verdun is near a metro station.

All these points are valid. It makes me wonder what the limit is for getting off-island suburbanites, who won’t be nearly as well served as Verdun is even when you run the REM off the island, to shift to public transit, and is it worth the billions we’re spending on it?