This is covered in another closure notice:
No Access Between Booth Ave and Lake Shore Boulevard: as early as June 2 for 6–8 weeks
Beginning as early as June 2nd at 5 a.m. for approximately 6-8 weeks, the intersection of Lake Shore Boulevard and Booth Avenue will be closed. To get off Booth Avenue, use Eastern Avenue, or the laneways that connect to Logan Avenue, as shown on the map above. During this closure, we will be completing work such as building curbs, gutters and catch basins, as well as running electrical conduits and installing lighting.
SEE:
https://www.waterfrontoronto.ca/construction-in-the-port-lands