King Street West

Starting as early as November 23, 2026, the City of Toronto will resume coordinated construction on King Street West. This page provides information about construction, TTC service changes, and temporary transit priority measures along Queen Street West that will help keep transit and traffic moving while 504/304 King streetcars divert during construction.

At a glance

• Construction is expected to begin as early as November 23, 2026.
• The City of Toronto will replace two 139-year-old watermains, followed by joint City-TTC streetcar track renewal in the same areas.
• Initial TTC service changes began on November 1, 2026.
• 504|304 King streetcars will begin diverting via Queen Street West once construction starts  later in November..
• Temporary extended "no-stopping" prohibitions and new turn restrictions being implemented on Queen Street West to help keep transit and traffic moving during construction-related transit diversions.

What's happening?

As early as November 23, 2026, the City of Toronto and TTC will resume joint infrastructure work on King Street West. The project will start with City-led watermain replacement, followed by City-TTC streetcar track renewal. By coordinating this work, the City and TTC can continue to renew critical infrastructure at the same time and reduce future construction-related disruptions in the local community.

Construction locations and timelines

Location	Timeline (estimated)
From Dufferin Street to Close Avenue	As early as November 23, 2026 to August 2027
From Spadina Avenue to Portland Street	December 2026 to August 2027
From Bathurst Street to Shaw Street	Spring 2027 to summer/fall 2027
At the King Street West and York Street intersection	June 2027 to August 2027

 

Learn more about the City of Toronto's watermain replacement construction on King Street West

Visit the City's King Street Construction webpage for information about construction timelines, work hours, general travel impacts, loading access, public notices, and to subscribe for construction email updates.

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TTC service changes

On Sunday, November 1, 2026, the TTC implemented the following service changes on King Street West in preparation for upcoming City watermain replacement construction:

• 504|304 King streetcars are operating as a single branch between Dundas West Station and Broadview Station.
• 504C|304C King replacement buses are operating between Roncesvalles Avenue and Distillery (Front Street East and Cherry Street).
• 503 Kingston Rd replacement buses were extended west to Dufferin Gate Loop.
• 508 Lake Shore streetcars were temporarily suspended.

Starting as early as mid-November 2026, to accommodate City watermain replacement construction on King Street West between Dufferin Street and Close Avenue, the following service changes will be implemented:

• 504|304 King streetcars will divert via Queen Street West between Shaw Street and Roncesvalles Avenue.
• 504C|304C King replacement buses will continue operating between Roncesvalles Avenue and Distillery (Front Street East and Cherry Street).
• 503 Kingston Rd replacement buses will continue operating to Dufferin Gate Loop.
• 508 Lake Shore streetcars will remain suspended.

View the service changes map.

Starting as early as November 26, 2026, to accommodate City watermain replacement construction on King Street West between Spadina Avenue and Portland Street, the following service changes will be implemented:

• 504|304 King streetcars will divert further east via Queen Street West between Spadina Avenue and Roncesvalles Avenue.
  All otherservice changes introduced during the previous stage will remain in effect.

View the service changes map.

Wheel-Trans

Wheel-Trans service will continue to operate throughout construction.

Looking ahead

Additional TTC service changes are expected as construction progresses in 2027. Details will be posted on this page once confirmed.

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Changes on Queen Street West

Why are transit priority measures needed? 

During construction on King Street West, 504|304 King streetcars will divert to Queen Street West. To help manage the additional streetcar activity, the City of Toronto will implement temporary transit priority measures between Spadina Avenue and Roncesvalles Avenue.These measures will help keep transit and traffic moving during construction on King Street West.

Learn more about the City Council-approved transit priority measures on Queen Street West.

Similar measures have helped manage congestion and support reliable transit service during previous construction projects in the area.

The measures are as follows:

Temporary left-turn restrictions on Queen Street West

Restriction	Location(s)	Days and hours
Eastbound left-turns prohibited	Sorauren Avenue, Dufferin Street, and Dovercourt Road	Monday to Saturday, from 7 a.m. to 7 p.m.
Westbound left-turns prohibited	Dovercourt Road and Strachan Avenue	Monday to Saturday, from 7 a.m. to 7 p.m.
Westbound left-turns prohibited	Augusta Avenue	Monday to Friday, from 2 p.m. to 7 p.m.

 

Temporary extended 'no stopping' prohibitions on Queen Street West

Side of street	Section of Queen Street West	New "no stopping" hours
North	Roncesvalles Avenue to Dufferin Street; Dufferin Street to Shaw Street	Monday to Friday, 7 a.m. to 11 a.m. and 2 p.m. to 7 p.m.
North	Shaw Street to Spadina Avenue	Monday to Sunday, 7 a.m. to 11 a.m. and 2 p.m. to 7 p.m.
South	Roncesvalles Avenue to Spadina Avenue	Monday to Sunday, 7 a.m. to 11 a.m. and 2 p.m. to 7 p.m.

 

When will these changes take effect?

Information about sign installation and implementation dates for these temporary measures will be posted on this page once available.

When will theses changes end?

The temporary transit priority measures will be removed once construction on King Street West is complete and 504|304 King streetcars return to their regular route.