The yard has 26 tracks numbered from east to west. Exterior tracks 1 to 15 and the LFLRV repair bay track all face north while the other tracks face south. The carhouse has four "barns" which are from east to west: the LFLRV repair bay, Inspection Bay 2, Inspection Bay 1, Repair Bay. Tracks 24 and 25 are the only stub-end tracks within the shop buildings. Track 20 has a carwash. A boiler room is near the south-west corner of the carhouse building. A sub-station is located near the north-east corner of the yard between track 1 and Roncesvalles Avenue. The traffic office is at the south-east corner beside track 5. Yard entrances/exits are on The Queensway Avenue and Roncesvalles Avenue. The Roncesvalles Avenue entrance in conjunction with the special work at the intersection of Queen Street, King Street, The Queensway and Roncesvalles Avenue can serve streetcars from and to any street at that intersection. The Queensway entrance cannot serve streetcars to or from Humber Loop. After the reconstruction of the Roncesvalles Carhouse, tracks 3 and 4 will be reinstated; tracks 1 to 4 will be extended southward to join track 5.
History
The Toronto Railway Company opened the Roncesvalles Carhouse on January 22, 1895. It was located facing Roncesvalles Avenue on the west side of the street just north of Queen Street. Like most other TRC facilities maintenance had been deferred as its contract with the city came up for renewal. When the City took over streetcar operations in 1921, its new transit agency, the Toronto Transportation Commission, determined the existing facilities should be torn down and replaced. The replacement carhouse opened in 1923, with the tracks realigned north-south. In 1927, the TTC took over operation of the Port Credit radial line which at that time ran west from Humber Loop. After converting the line from standard gauge to the streetcar system's broader gauge, the TTC closed the old Toronto and York Radial Railway carhouse near Grenadier Pond, and housed the Port Credit radial cars at the Roncesvalles Carhouse. This arrangement continued until February 9, 1935 when the Port Credit radial was permanently replaced by bus service. By 2013, of new maintenance capabilities were added to the carhouse to handle the new low floorFlexity streetcars introduced in 2014. Unlike the TTC's legacy streetcar fleet, where the vehicle's serviceable parts were under the floor, the low-floor vehicle house the serviceable parts above the ceiling. This requires a different infrastructure for servicing and maintaining the vehicles. As an addition to the Roncesvalles structure, the TTC added a new one-track service bay capable of providing some maintenance for the new low-floor streetcar vehicles. This was the only facility built to service the first of the new vehicles in service, before the Leslie Carhouse opened, in 2016. From February 18, 2018, Roncesvalles Carhouse is closed for major construction work. In the meantime, all streetcars from this carhouse were moved to Russell Carhouse and Leslie Barns. In 2019, Roncesvalles reopened at 50% capacity; it will not return to full capacity until 2020 when all construction work is completed. Work will include:
The special work on the north side of the yard is at the end of its useful life and will be replaced.
Within Inspection Bay 1, interior tracks 21-23 will be replaced, and interior obstructions removed in order to accommodate Flexity Outlook streetcars. Provision will be made for a high level platform. Also, the north end of Inspection Bay 1 will be extended.
Track 6 will be extended to allow for additional storage.
Also to provide more storage space, tracks 3 and 4 will be reinstated, and tracks 1 to 4 will all be extended southward to join track 5.
OCS poles supporting the overhead wires will be replaced to allow for pantograph operation.
On January 6, 2019, Roncesvalles Carhouse partially reopened to service some of the Flexity Outlook streetcars used on routes 501 Queen, 504 King and 512 St. Clair. In separate instances in August 2019 and January 2020, a streetcar going along the S-curve at the middle of the north end of the yard hurled its trolley pole shoe through the window of a nearby building outside the yard. The TTC suspected the cause of the two incidents was speed and perhaps an improper attachment of the shoe to the trolley pole. The shoe is made of brass and weighs 3–4 pounds. To prevent further incidents, the TTC has since required drivers to go around the S-curve at 5 km/h with the pantograph raised and the trolley pole lowered.
Sunnyside Loop
This is an anticlockwise streetcar loop, exterior to the southwest corner of the carhouse property. It is used to turn back westbound 501 Queen and 504 King streetcars, which can only enter the loop westbound from The Queensway and exit southbound on Sunnyside Avenue to return eastbound.
