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Bay / Harbourfront streetcar tunnel repairs:
TTC detours, April 22 to 24



This weekend, crews are repairing leaks in the streetcar tunnel under Bay Street between Union Station and Queens Quay West.

From 1 a.m. Saturday, April 22 until 5 a.m. Monday, April 24, the TTC is closing the tunnel and detouring streetcars operating along these routes:

  • 317 Spadina overnight;
  • 509 Harbourfront; and
  • 510 Spadina.

The TTC is replacing streetcars with buses along the entire 509 Harbourfront route. Shuttle buses also replace the 317 / 510 Spadina streetcar routes south of King Street West.

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The crews work only in the streetcar tunnel, although they may generate some noise that you could hear at street level.

While the tunnel is closed, the crews are also heightening cautionary warnings on the streetcar right-of-way at York Street and on the ramp for motorists approaching the streetcar tunnel. They’ll add rumble strips on the concrete track allowance and lower the red beacon lights at the ramp.

During these projects, the crews are:

  • drilling small holes into the concrete walls of the tunnel to insert injectors;
  • using the injectors to insert grout through the holes and prevent water from leaking into the tunnel; and
  • using a milling machine to create impressions or “rumble strips” on the ramp.

509 Harbourfront

From 1 a.m. Saturday, April 22 until 5 a.m. Monday, April 24, the TTC operates buses, instead of streetcars along the route.

Eastbound buses start their trips in Exhibition Loop, then proceed:

eastward along the loop access road, Manitoba Drive and Fleet Street;
southward along Fort York Boulevard;
eastward along Lake Shore Boulevard West and Fleet Street,
southward along Bathurst Street;
eastward along Queens Quay West;
northward along Bay Street;
eastward along Adelaide Street West; and then
southward along Yonge Street to King Street West,
ending their trips.

Eastbound buses drop off or pick up passengers at the curb near most streetcar stops. However they also skip these regular route 509 stops:

  • on Fleet Street east of Fort York Boulevard and across from Bastion Street and
  • at Queens Quay and Union streetcar stations (in the tunnel).

Eastbound buses also serve passengers at temporary stops

  • on Fleet Street west of Fort York Boulevard,
  • on Bay Street north of Queens Quay West and Lake Shore Boulevard West, across from the Air Canada Centre and at Front, Wellington and King Streets West and
  • on Yonge Street at King Street West (beside the entrance to King Station).

Westbound buses start their trips on Yonge Street at King Street West, then proceed:

southward along Yonge;
westward along Wellington Street West;
southward along Bay Street;
westward along Queens Quay West;
northward along Bathurst Street; and then
westward along Fleet Street, Manitoba Drive and the loop access road to Exhibition Loop,
ending their trips.

Westbound buses drop off or pick up passengers at the curb near most streetcar stops. However they also skip these regular route 509 stops:

  • at Union and Queens Quay streetcar stations (in the tunnel).

Westbound buses also serve passengers at temporary stops

  • on Yonge Street at King and Wellington Streets West,
  • on Bay Street at Front Street West and south of Harbour Street.
510 Spadina
317 Spadina overnight

From 1 a.m. Saturday, April 22 until 5 a.m. Monday, April 24, streetcars start and end their trips in Charlotte Loop.

Southbound cars operate along their regular route to Spadina Avenue and Adelaide Street West, then proceed:

eastward along Adelaide West; and then
southward along Charlotte Street to Oxley Street,
ending their trips.

Southbound cars skip their regular stops

  • on Spadina Avenue at King and Front Streets West,
  • on Lower Spadina Avenue at Fort York Boulevard,
  • on Queens Quay West east of Lower Spadina Avenue and at Rees and York Streets and
  • at Queens Quay and Union streetcar stations (in the tunnel).

Shuttle buses replace the cars south of King Street West. Southbound streetcar passengers may transfer to southbound buses on Charlotte Street at Oxley Street.

Northbound cars start their trips on Charlotte Street at Oxley Street, then proceed:

southward along Charlotte; and then
westward along King Street West to Spadina Avenue,
resuming their regular route northward along Spadina.

Northbound cars skip their regular stops

  • at Union and Queens Quay streetcar stations (in the tunnel),
  • on Queens Quay West west of York and Rees Streets,
  • on Lower Spadina Avenue north of Queens Quay West and Bremner Boulevard and
  • on Spadina Avenue north of Front Street West.

Northbound cars also pick up passengers at stops

  • on Charlotte Street at Oxley Street and King Street West and
  • on King Street West at Spadina Avenue.

Shuttle buses replace the cars south of King Street West.

317 /510 Spadina shuttle bus

From 1 a.m. Saturday, April 22 until 5 a.m. Monday, April 24, the TTC replaces streetcars operating along the 317 Spadina overnight and 510 Spadina routes with buses south of King Street West.

South- and eastbound buses start their trips in Charlotte Loop (on Charlotte Street at Oxley Street), then proceed:

southward along Charlotte;
westward along King Street West;
southward along Spadina and Lower Spadina Avenues;
eastward along Queens Quay West;
northward along Bay Street;
eastward along Adelaide Street West; and then
southward along Yonge Street to King Street West,
ending their trips.

South- and eastbound buses drop off or pick up passengers at the curb near most streetcar stops, including

  • on Charlotte Street at Oxley Street and King Street West,
  • on King Street West at Spadina Avenue,
  • on Spadina Avenue at King and Front Streets West,
  • on Lower Spadina Avenue at Fort York Boulevard,
  • on Queens Quay West east of Lower Spadina Avenue and at Rees and York Streets,
  • on Bay Street north of Queens Quay West and Lake Shore Boulevard West, across from the Air Canada Centre and at Front, Wellington and King Streets West and
  • on Yonge Street at King Street West (beside the entrance to King Station).

South- and eastbound buses skip regular route 317 / 510 streetcar stops

  • at Queens Quay and Union streetcar stations (in the tunnel).

West- and northbound buses start their trips on Yonge Street at King Street West, then proceed:

southward along Yonge;
westward along Wellington Street West;
southward along Bay Street;
westward along Queens Quay West;
northward along Lower Spadina and Spadina Avenues;
eastward along Adelaide Street West; and then
southward along Charlotte Street to Oxley Street,
ending their trips.

West- and northbound buses drop off or pick up passengers at the curb near most streetcar stops, including

  • on Yonge Street at King and Wellington Streets West,
  • on Bay Street at Front Street West and south of Harbour Street,
  • on Queens Quay West west of York and Rees Streets,
  • on Lower Spadina Avenue north of Queens Quay West and Bremner Boulevard,
  • on Spadina Avenue north of Front and King Streets West and
  • on Charlotte Street at Oxley Street.

West- and northbound buses skip regular route 317 / 510 streetcar stops

  • at Union and Queens Quay streetcar stations (in the tunnel).

West- and northbound bus passengers may transfer to northbound streetcars on Spadina Avenue north of King Street West.


At Union Station, board shuttle buses on Bay Street north of Front Street West. You’ll need a TTC paper transfer if you’re connecting with the buses from the 1 Yonge - University subway line and you pay your fare with cash, tickets or tokens. Pick up a transfer where you first pay your fare.