With the constant changes in route diversions for various construction projects, water and sewer repairs and overhead reconstruction, the previous Fall 2025 edition was getting cluttered and unwieldy. This version consolidates the current and planned work for late fall and early winter 2025-26.
Updated December 14, 2025 at 10:00am
Current diversions:
Until late December 2025:
506 Carlton cars divert both ways between Bay and Spadina via Dundas.
Until Spring 2026:
501 Queen cars divert both ways via Broadview, Dundas and Parliament.
503 Kingston Road buses divert both ways from River via Queen and Parliament.
504 King cars terminate at Distillery Loop.
504D King buses operate from Broadview Station to King & Parliament
Ongoing:
501 Queen cars divert both ways via Church, Richmond/Adelaide and York.
Pending diversions:
Dec. 15 to Dec 18 (11pm to 4am): 510/310 Spadina streetcars will divert to Bathurst Station due to infrastructure work on the north end of the line. Shuttle buses will run from Spadina Station at street level to College Street.
At the TTC Board meeting on November 3, management presented statistics on streetcar delays broken down by type of incident. TTC is quite fond of portraying external incidents, especially those related to congestion, as the root of (almost) all evil. The following page is from the CEO’s Report.
Note that external delays (turquoise) occupy the majority of the chart. During discussion of the problem of autos fouling rails, a passing remark by the Interim Chief Operating Officer piqued my curiosity when he said that there were many delays due to the winter storm.
This sent me to the TTC’s delay statistics which are available on the City’s Open Data site. There are codes for many types of delay including “MTAFR”, short for “Auto Fouling Rails”.
According to the “In Focus” box above there has been a 400% year-over-year increase in these delays, although they are styled as “fowling” implying a flock of chickens might be responsible for service issues.
Sorting the data by code and summarizing by date produces interesting results.
Between January 1 and September 30, 2025, there were 843 MTAFR events logged.
Of these, 586 fall between February 14 and 26 hitting a daily high of 65 on February 17.
These blockages were not caused by the typical traffic congestion, but by the City’s utter failure to clear snow on key streets.
105 were on 501 Queen
42 were on 503 Kingston Rd.
84 were on 504 King
93 were on 505 Dundas
186 were on 506 Carlton
3 were on 507 Long Branch
1 was on 508 Lake Shore
2 were on 509 Harbourfront
None were on 510 Spadina or 511 Bathurst
6 were on 512 St. Clair
A few dozen were on various night cars
The pattern here is quite clear: routes on wide roads or rights-of-way were not seriously affected, but routes on regular 4-lane streets were hammered. (How 511 Bathurst was spared is a mystery. At the time it was running with streetcars from Bathurst Station to King & Spadina, and with buses on the south end of the route.)
To claim that the 400% increase from 2024 is some indication of worsening traffic problems is gross misrepresentation of what actually happened. Although this is the CEO’s report and he almost certainly did not assemble the information himself, he wears this issue for having reported misleading data to the Board and public.
Direct comparison with published 2024 data is difficult because until 2025 the TTC used a much coarser set of delay codes that lumped many types of events under generic headings. There was a category “Held by” in which there were 625 incidents from January to September in 2024. The 843 MTAFR codes in 2025 are quite clearly not a 400% increase over 2024.
Whenever there is a discussion of unreliable service, we hear endlessly about traffic congestion. This definitely is a problem, but not the only one, and certainly not in the way presented by the CEO.
A question arose during the debate about the problem that performance stats are consolidated across all routes. Route-by-route service quality is presented in detail in the second part of this article for all streetcar routes. This shows that problems are widespread in the system, even on routes with reserved lanes.
As for the delay stats cited by the CEO, it is clear that we are not comparing September 2025 to one year earlier as the text implies, but using events from the entire year to date including a major snowstorm that had no equivalent a year earlier. The so-called 400% jump in delays from blocked tracks is due to snow and poor road clearance by the City.
TTC management owes the Board and the public an apology for blatant misrepresentation of the delay statistics.
The City of Toronto has announced that work at King & Dufferin is finished and the intersection will reopen to traffic on Wednesday, October 29 after 7pm.
Regular service will be restored on 29/929/329 Dufferin, and the 503 Kingston Road bus will be extended west from Joe Shuster Way (east of Dufferin) to Roncesvalles at 5am on Thursday, October 30.
TTC will test the new track and overhead during the week of November 3 and will restore 504 King and 508 Lake Shore services from their current Shaw/Queen diversion when the intersection is cleared for streetcar operation.
Meanwhile, the TTC CEO’s Report notes that six minute or better service will come to 505 Dundas and 511 Bathurst from 7am-7pm 7 days/week starting November 16.
There are many diversions coming up in the Fall for streetcar routes. Information on these appears in various places on the TTC site, mainly but not exclusively under Service Advisories. As an aid to riders, this article consolidates the available information in one place.
Updated November 28, 2025
***** This article is only for archival purposes. It has been replaced by a new one picking up from mid-November 2025. *****
Major events pending and in progress include:
Construction on Queen between Davies (just east of the Don Bridge) and Broadview.
Reconstruction of the intersection of College and McCaul, and of overhead in the vicinity.
Reconstruction of track and overhead at and near Parliament and Carlton.
Other short term diversions will last only overnight or for a weekend.
Many of these are complicated by the ongoing Ontario Line work at Queen & Yonge forcing some diversions to be more complex than they might be otherwise.
This article will be updated when changes are announced.
November 21: The 501 diversion via Broadview, Dundas and Parliament around water main and track work west of Broadview will begin on November 22.
November 20: Equipment and material mobilization is underway on Queen west of Broadview.
November 17: The 506 diversion has been changed today to avoid the intersection of Church & Dundas where construction blocks the northeast corner. Maps have been added from the TTC’s site.
Effective November 16: The 503 Kingston Road bus will be cut back from Dufferin, and will now loop at York Street via Richmond and University.
November 15: Diversions announced for two projects on 506 Carlton at Parliament & Carlton, and on Gerrard east of Broadview.
November 9: King & Dufferin reopened for streetcar service. 503, 504, 508 will operate via their normal routes.
October 30: King & Dufferin reopens for general traffic and buses. Streetcars to return following track testing.
October 20: Water main reconstruction on Queen west of Broadview has been delayed until early November. 501 Queen streetcars will continue to operate on Queen Street until further notice.
October 13: 504 King is operating with streetcars today over its full route except for the King/Dufferin diversion.
October 9: Maps for 504 King and 506 Carlton diversions added.
October 8: Construction at Queen & Broadview will not start on October 12, and so some diversions will not be required immediately. Information for 501 Queen and 503 Kingston Road has been updated.
October 5: Nuit Blanch & Run For the Cure info moved to the archive section.
October 1: Diversions of 505/305 Dundas and 506/306 Carlton for Nuit Blance and for the Run For The Cure added for October 3/4/5.
September 23: The King/Dufferin start date has been changed to Sunday, September 28.
September 12: King/Dufferin start date pushed back to September 29 or later. The project will now extend to mid-November.
September 9: College/McCaul and Queen East details added.
August 26: King/Dufferin Project
The start date for this project has been changed to mid-September with the exact date to be confirmed. Although new schedules will be in place providing for diversions, service will continue to operate through on King Street until construction actually begins. This likely means that the project will extend further into October than the originally planned Thanksgiving weekend end date. The delay also means that the Tiff diversions will end before the King/Dufferin diversions begin.
Branch lettering for 504 King A/B corrected.
August 25: King/Dufferin Project
Information about Kingston Road night service added.
304 King and 329 Dufferin confirmed to be diverted on the same routes as the 504A and 29 daytime services.
The TTC is into the second round of its consultation for service changes and construction projects in 2026. There is a general page on the 2026 Network Plan and a Survey for feedback.
If you comment here, be sure to also complete the survey so that your feedback goes into the official record.
Updated August 14, 2025 at 1:20pm: This article was written based on information in the customer survey as it existed about 4:00 pm on August 13 when the link to it went live on the TTC site. This included a reference to a minimum 5 minute time saving for express buses which did not match the TTC’s own service standard. The survey now contains the correct information. Text in this article has been updated accordingly.
Updated August 22, 2025 at 2:40pm: The City of Toronto has confirmed that widening of the St. Clair underpass east of Keele Street will not be part of the Metrolinx/TTC project planned for 2026.
Public Pop-Ups
August 13: Pioneer Village Station near express route bus bays 7:30-9:30 a.m.
August 14: Kipling Station near express route bus bays 7:30-9:30 a.m.
August 18: Kennedy Station near express route bus bays (Platform A and B) 7:30-9:30 a.m.
August 19: Don Mills Station near express route bus bays 4-6 p.m.
August 20: Yonge and College 506 Carlton, Eastbound stop 4-6 p.m.
Note that almost all of these relate to the review of express bus services, and only one of the construction proposals (College/Carlton) is covered. More consultation in affected neighbourhoods is definitely required.
Starting after Labour Day in September, the TTC will rebuild the track at the King-Dufferin intersection. This work is expected to take about six weeks.
The project is left over from work on King West in 2024 when it could not be completed as planned due to supply problems. It was erroneously reported that the 2024 project finished “early” when in fact this was due to the scope change.
Transit services will be significantly changed in this area.
Source: City of Toronto Report at p. 5
Note that the diversions for King-Church construction are expected to end before King-Dufferin work begins, and transit services on the eastern part of King will be back to normal.
Route changes at King-Dufferin:
Routes diverting east of Roncesvalles via Queen and Shaw to King:
504A King streetcars from Distillery Loop to Dundas West Station
304 King night cars from Broadview Station to Dundas West Station
508 Lake Shore streetcars from Long Branch to Broadview Station
No service on King between Mowat and Roncesvalles
504B King streetcars will operate from Broadview Station diverting from King via Bathurst to Wolseley Loop (at Queen).
Kingston Road services:
503 Kingston Road converted to bus operation and cut back from Dufferin to loop via Mowat and Fraser.
303 Kingston Road night service suspended (it is not yet clear what will replace the 303 on Kingston Road)
Dufferin bus services:
29 Dufferin buses will divert via Queen, Shaw and King looping via Mowat and Fraser.
929 Dufferin Express buses will terminate at Queen looping via Queen, Gladstone and Peel.
No service on Dufferin south Queen nor through Exhibition Place to Princes’ Gate.
Parking and stopping provisions will change on Queen from Roncesvalles to Shaw, and on Shaw between Queen and King. Stopping will be prohibited on both sides of these streets seven days/week from 7:00 to 11:00am and 2:00 to 7:00pm.
Left turns will be banned from Shaw northbound at Queen and southbound at King. Left turns are now banned from King eastbound onto Shaw weekdays from 7:00 to 10:00am, and from 3:00 to 7:00pm. This will be extended to a ban from 7:00am to 7:00pm on all days.
Some existing parking spaces will be removed to make room for transit vehicles on Dufferin north of Queen, Peel, Mowat, Liberty, Fraser, and King. Details are in the report.
These changes will only last for the duration of the construction project.
The TTC plans to “conduct comprehensive targeted engagement to inform and educate customers, residents, local businesses, and other partners of the pending changes.” However, major changes are unlikely as this project is only two months away and temporary transit routes are already decided. The TTC does not yet have a page on its own site for this project.
This issue will be at Toronto & East York Community Council on July 8, 2025.
Two proposals before City Council attempt to deal with congestion issues downtown brought on by the King/Church water main and track reconstruction.
MM31.17 – Speeding Up Streetcars: Traffic Amendments on Adelaide Street, King Street and York Street – by Mayor Olivia Chow, seconded by Deputy Mayor Ausma Malik
This motion proposes the relocation of parking and loading zones from Adelaide Street to nearby streets to free up capacity on Adelaide.
Currently, the Financial District Business Improvement Area and their stakeholders use loading zones on the south side of Adelaide Street West, from Yonge Street to York Street, between 10:00 a.m. to 3:00 p.m., Monday to Friday. Based on the travel time data, streetcar operations are negatively impacted when the loading operations are in effect.
In consultation with the Toronto Transit Commission, Transportation Services and the Financial District have agreed that temporary loading zones will be established on the west side of York Street, between King Street West and Wellington Street, and on the north side of King Street West, between Yonge Street and York Street.
Delivery drivers will queue in the new loading zones, where Traffic Control Persons will marshal the delivery drivers into the loading bay only when it is clear. With the temporary loading zones in place, stopping will be prohibited on Adelaide Street West from 7:00 a.m. to 7:00 p.m., Monday to Sunday.
Mayor Chow proposed an amendment to her own motion authorizing payment “to deploy additional paid duty officers at seven locations near the King and Church worksite to manage traffic flow”.
MM31.18 – Re-Opening King Street for Business: Keeping Toronto’s Downtown Core and Canada’s Financial District Moving – by Councillor Brad Bradford, seconded by Councillor Stephen Holyday
This motion proposes the reopening of through traffic on King Street where streetcars are not operating during the construction diversion.
City Council direct the General Manager, Transportation Services, to make any necessary changes to reopen the portion of King Street between Spadina Avenue and Church Street to vehicular traffic for the duration of the King Street East and Church Street intersection closure, where streetcars are not currently in service.
Mayor Chow proposed an amendment limiting the reopened area to portions where “streetcars and buses” are not operating. This effectively neuters the motion because the only portion of King with no transit service now is east of Yonge Street.
The debate was mired by a combination of political rivalries, lack of familiarity with the affected area and transit services, and disinformation either through ignorance or misrepresentation.
The Mayor’s motion MM31.17 and amendment carried on a show of hands.
The Mayor’s proposed amendment to MM31.18 carried by 16-5. The motion as amended carried on a show of hands.
The debate was hampered by the absence of basic information such as a map and detailed information on items such as existing transit services, traffic pinch points and loading zone locations.
In support of his claim that King Street could be reopened, Councillor Bradford showed a photo looking west on King from Simcoe with the street completely devoid of traffic. The photo was taken at 6:30pm on Monday.
Monday is a very light day for office-bound traffic due to work-from-home patterns. This is also reflected in day-of-the-week travel time differences shown later in this article.
The theatre district (Roy Thomson Hall, Royal Alexandra and Princess of Wales Theatres, TIFF) are dark on Mondays, and there is little tourist traffic. There was no major event at the Rogers Centre.
Although an empty road can be found at times, the photo is deeply misleading, and Bradford should know better.
Among the most striking pieces of disinformation was the claim that replacement bus service carries far fewer riders than the streetcars did along the King Street corridor. When asked, staff gave riding figures of 24,000 on the King Street replacement bus, and 60,000 per day for the streetcars. These are all day values for the entire route, not for riding on the King Street transit corridor itself. At no point was there any discussion of the frequency (and hence capacity) of service. These numbers were cited by various Councillors to claim that transit priority was not needed on King because so many fewer people were riding there.
City staff should be chastised for failing to correct this point and for giving an answer that did not properly illuminate the comparison between service levels.
For the record, the scheduled service on the central portion of King Street with streetcars and buses is shown below. Note that there is substantially less scheduled capacity with the replacement bus service. Buses on King are quite crowded, and service is bunched and erratic.
It is quite likely that there are fewer riders on the buses than on the streetcars, although a major contributing factor will be the level of service provided by the TTC. From a capacity viewpoint, a service of 18 buses/hour with 50/bus (greater than the Service Standard level) would be 900 riders per hour past a point. The streetcar service would have a capacity more than double that level.
PM Peak Service
Streetcar Service (Apr/25)
Bus Service (June/25)
504A Distillery-Dundas West
10′ (6 cars/hour)
504B Broadview-Dundas West
10′ (6 cars/hour)
503 Kingston Road (EB from York)
10′ (6 cars/hour)
508 Lake Shore
20′ (3 cars/hour)
504D Broadview-Bathurst
5′ (12 buses/hour)
504C Distillery-Bathurst
10′ (6 buses/hour)
In the course of the debate, Mayor Chow noted that work at King & Church is progressing well and should be finished by August 8. This may allow the road to reopen, but resumption of streetcar service depends on the TTC finishing their work including reconstruction of streetcar overhead at that intersection and along King Street East.
The remainder of this article updates previously-published charts about streetcar travel times on Richmond and Adelaide Streets.
Updated June 24, 2025: The TTC has now standardized the 504 King and 503 Kingston Road diversions so that both routes (and associated night services) operate via Queen and Shaw Streets
The diversions for track reconstruction on King Street will change again on Sunday, June 22. The TTC has posted conflicting information both on its website and in its weekly update memo regarding construction and special events. I have asked TTC for clarification and will update this page if and when they reply.
In an email on June 19, the TTC announced:
From 6 a.m. on Sun., June 22, until 4 a.m. on Sat., Jul. 12, the 503/303 Kingston Road streetcars will divert to accommodate streetcar track work on King St. between Shaw St. and Spadina Ave. 503/303 Kingston Road streetcars will run along Queen St. between Shaw St. and Dufferin St. 504D King replacement buses will be extended to run from King St. and Bathurst St. to Dufferin Gate Loop.
Affected routes:
503/303 Kingston Road cars which now operate via Queen, Spadina and King to Dufferin Loop will change to run via Queen Street to Dufferin and then south to Dufferin Loop. This changed on June 24. See below.
504D shuttle buses (Broadview/Bathurst) will be extended west from Bathurst via Queen and Dufferin to Dufferin Loop. In fact the buses ran west via King, not Queen.
Here are the original TTC maps.
Source: TTC 503 and 504D Diversion Notices (No longer online)
It appears that whoever designed this change notice is unaware that the 503 does not now operate via Queen and Shaw, but in fact runs on King from Spadina westward.
Updated Monday, June 23 at 10:45pm: The erroneous map of the 504D diversion has been replaced on the TTC’s site. Here is the corrected map.
Updated Tuesday, June 24 at 5:00pm: The diversion of 503/303 and 504/304 services has now been standardized via Queen and Shaw Streets, and the notice/map also include the 504D bus extension west from King and Bathurst to Dufferin Loop.
511 Bathurst cars resume service to Exhibition Loop and will not operate east on King from Bathurst to Charlotte Loop at Spadina.
508 Lake Shore service is discontinued for the summer.
There is no reference to the existing 504 streetcar route which operates via Queen and Shaw to King, nor is there any explanation of why the 503 and 504D services cannot use the same route. (Corrected effective June 24.)
Here is the construction plan included in the June 22, 2025 service change memo clearly showing where the 503 car runs today, but this will not, in fact, be how the routes operate starting June 22.
Taking the TTC notices at face value, this means that service on parts of King will be affected in different ways:
From Spadina to Bathurst, only the 504C/D shuttle buses will operate and will, presumably, dodge around construction as they have been doing in recent weeks during track margin repairs along King Street.
From Bathurst to Shaw, there will be no transit service. This affects stops at Tecumseth, Niagara and Strachan. Updated: The 504D buses are supposed to run west on King from Bathurst to Dufferin, but few of them actually get beyond Bathurst.
From Shaw to Dufferin depends on the continued operation of 504 King cars. As of June 24, 503 Kingston Road cars were also running via Queen, Shaw and King.
This is a repetition of the classic TTC communications cock-ups of past years where diversions are poorly or inaccurately explained. They are supposed to be “doing diversions differently” this year, but this is not a sterling example.
Updated 4:50 pm June 20: There are separate pages on the TTC website describing the 503/504 diversions which make no mention at all of the change effective June 22. They refer to the summer suspension of the 508 Lake Shore, but assure riders there are no other changes:
Starting Monday, June 23, 508 Lake Shore streetcar service will be suspended until early September for seasonal service adjustments. There will be no changes to 503/303 Kingston Rd, 504/304 King streetcars or to 504/304 King replacement bus routing. [Source: TTC Streetcar service changes.]
As of Tuesday, June 24, the separate streetcar diversion pages for the King and Kingston Road services still make no mention of the changes west of Bathurst Street.
Effective Monday, June 2, 2025, the 504C/D and 304D shuttle buses will divert around the construction at King & Church via Yonge, Front/Wellington and Jarvis as shown in the map below. This affects only the shuttle buses, and the streetcar diversions via Richmond/Adelaide are not affected.
How this will work with already congested conditions south of King on Yonge and on Jarvis remains to be seen.
Source: TTC
The map below combines all of the diversions into one view of where King and related routes are diverting in and near downtown.
Not shown are:
501 Queen continues to divert via Church, Richmond/Adelaide and York.
509 Harbourfront which is temporarily replaced by a bus between Spadina and Exhibition Loop.
510 Spadina continues to operate from Spadina Station to Union Station.
511 Bathurst continues its split operation with streetcars running east on King to loop at Spadina and a shuttle bus replacement to the Exhibition due to construction at Bathurst & Lake Shore.
Updated May 16, 2025 at 3:50pm: The TTC has now published a map of the revised diversion routes.
In response to congestion problems for streetcars turning on and off of King and Queen Streets at Spadina, the TTC has modified the route of 504 King.
Instead of running west via Queen, Spadina and King, the 504 will now divert via Queen, Shaw and King. The 503 Kingston Road car will continue to operate via Spadina and King to Dufferin Loop.
The TTC has not yet updated the information on its King-Church diversion page as of 1:30pm May 16, but plans to do so. On-street signage will also be changed. The diversion map and information appear on several different pages, and it will be interesting to see if the TTC changes all of them.
Updated 3:50pm with revised diversion map for routes 504/304, 503/303 and 508. Not shown are routes 501 Queen and 511 Bathurst.
This reduces the peak streetcars/hour attempting to turn east-to-north at King and Spadina from 23 to 17, and west-to-south at Queen and Spadina from 13.5 to 7.5 (plus occasional 508 Lake Shore cars). Off-peak service is almost the same as peak service and so these numbers do not change much during those hours.
Numbers eastbound at King will be further reduced in late June when the 511 Bathurst cars, 6.5/hour, resume their normal route to Exhibition Loop, and 508 Lake Shore cars, 3/hour at peak, are suspended for the summer.
Updated: Now that the map has been published, it is clear that the 504C/D buses will continue to loop at Bathurst, and service on King from Bathurst to Shaw will only be provided by the 503 car.
Problems remain further east on the diversion with all of the 501 Queen, 503 Kingston Road, 504 King and 508 Lake Shore cars making turns to and from Church, Richmond, Adelaide and York, a total of about 23 per hour. There is also severe traffic congestion on Adelaide, but it is not clear how much of this is caused by queuing streetcars, and how much due to traffic volume and road capacity.
The option of using Victoria Street for the link between Queen and Richmond/Adelaide is not available because of Ontario Line construction, even though this would have separated the streetcar diversion from the busier Church Street.
Steve Munro 