On June 3, 2025, Public Services and Procurement Canada (PSPC) advised the public that the LaSalle Causeway will be fully closed to vehicles, cyclists and pedestrians from 6:00 am to 10:00 pm every Sunday in June, July and August, to allow for the temporary opening of the main marine navigation channel. The Causeway will also be closed for many Sunday's in September, October and November.
Full details can be found here:
LaSalle Causeway: Temporary closures for marine openings - Canada.ca