There will be another weekend subway closure between St. Andrew and Union stations for ongoing Union station platform upgrades, the TTC says.

Riders can use the Yonge line to travel to Union station or use the University line to travel to St. Andrew station.

The 506 Carlton, 505 Dundas, 501 Queen and 504 King streetcar are alternate routes to connect between the subway lines.

Regular service will resume Monday at 6 a.m.

The TTC says there will be additional weekend closures to complete Union station's revitalization in time for the Pan Am Games.