Item - 2025.EX23.3

The Executive Committee recommends that:

1. City Council amend City of Toronto Municipal Code Chapter 937, Temporary Closing of Highways, to delegate to the General Manager, Transportation Services, to facilitate the mechanical slope stabilization work related to the Ontario Line Minton Place Portal, despite Section 937-4 of Code Chapter 937, the authority to temporarily close to vehicular traffic:

a. the northbound middle and outside lanes and adjacent pavement shoulder on the Don Valley Parkway, between 600 metres south of Beechwood Drive and 350 metres north of Leaside Bridge, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including twenty nights between May 31, 2025, and September 30, 2025, inclusive,

and exempt the General Manager, Transportation Services, in carrying out this delegated authority from Section 937-5 of Chapter 937, that being the requirement to notify the local Ward Councillor of the pending closure and the requirement to report on the proposed closure if so requested by the local Ward Councillor.

2. City Council amend City of Toronto Municipal Code Chapter 937, Temporary Closing of Highways, to delegate to the General Manager, Transportation Services, to facilitate the monitoring equipment installation and lighting work related to the Ontario Line Lower Don Bridge, despite Section 937-4 of Code Chapter 937, the authority to temporarily close to vehicular traffic:

a. the southbound inside lane and adjacent pavement shoulder on the Don Valley Parkway, between 350 metres north of Gerrard Street and the Don Valley Parkway-F.G. Gardiner Expressway on-ramp, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including seven nights between May 26, 2025 and June 28, 2025, inclusive;

b. the southbound middle lane on the Don Valley Parkway, between 165 metres south of Gerrard Steet and the Don Valley Parkway-F.G. Gardiner Expressway on-ramp, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including seven nights between May 26, 2025 and June 28, 2025, inclusive;

c. the southbound outside lane on the Don Valley Parkway, between 30 metres north of Queen Street and the Don Valley Parkway-F.G. Gardiner Expressway on-ramp, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including seven nights between May 26, 2025 and June 28, 2025, inclusive;

d. the eastbound inside lane on the F.G. Gardiner Expressway, between 90 metres west of Rees Street and the Don Valley Parkway-F.G. Gardiner Expressway off-ramp, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including four nights between May 26, 2025 and June 28, 2025, inclusive;

e. the eastbound middle lane on the F.G. Gardiner Expressway, between 80 metres east of Lower Simcoe Street and the Don Valley Parkway-F.G. Gardiner Expressway off-ramp, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including four nights between May 26, 2025 and June 28, 2025, inclusive;

f. the eastbound outside lane on the F.G. Gardiner Expressway, between 110 metres west of Bay Street and the Don Valley Parkway-F.G. Gardiner Expressway off-ramp, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including four nights between May 26, 2025 and June 28, 2025, inclusive;

g. the Don Valley Parkway-F.G. Gardiner Expressway east off-ramp, between the F.G. Gardiner Expressway and the Don Valley Parkway, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including four nights between May 26, 2025 and June 28, 2025, inclusive;

h the Don Valley Parkway northbound, all lanes, between the Don Valley Parkway-F.G. Gardiner Expressway off-ramp and 100 metres south of Eastern Avenue, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including four nights between May 26, 2025 and June 28, 2025, inclusive;

i. the Bay Street-F.G. Gardiner Expressway eastbound on-ramp, between Bay Street and the F.G. Gardiner Expressway, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including four nights between May 26, 2025 and June 28, 2025, inclusive; and

j. the Rees Street-F.G. Gardiner Expressway eastbound on-ramp, between Rees Street and the F.G. Gardiner Expressway, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including four nights between May 26, 2025 and June 28, 2025, inclusive,

and exempt the General Manager, Transportation Services, in carrying out this delegated authority from Section 937-5 of Chapter 937, that being the requirement to notify the local Ward Councillor of the pending closure and the requirement to report on the proposed closure if so, requested by the local Ward Councillor.

3. City Council direct the General Manager, Transportation Services to add as a condition of permit that, between May 26, 2025 and June 28, 2025, inclusive, the Metrolinx contractor will implement only one temporary directional closure per night on the Don Valley Parkway, between 350 metres north of Gerrard Street and the Don Valley Parkway-F.G. Gardiner Expressway off-ramp, to facilitate the monitoring equipment installation and lighting work related to the Ontario Line Lower Don Bridge.

4. City Council amend City of Toronto Municipal Code Chapter 937, Temporary Closing of Highways, to delegate to the General Manager, Transportation Services, to facilitate the installation and removal of trestle structure, final bridge adjustments and removal of monitoring equipment related to the Ontario Line Lower Don Bridge, despite Section 937-4 of Code Chapter 937, the authority to temporarily close to vehicular traffic:

a. the southbound inside lane and adjacent pavement shoulder on the Don Valley Parkway, between 350 metres north of Gerrard Street and the Don Valley Parkway-F.G. Gardiner Expressway on-ramp, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including five nights between September 22, 2025 and October 24, 2025, inclusive, and for up to and including eight nights between December 1, 2026 and December 31, 2026, inclusive, and for up to and including two nights between June 1, 2027 and June 30, 2027, inclusive;

b. the southbound middle lane on the Don Valley Parkway, between 165 metres south of Gerrard Street and the Don Valley Parkway-F.G. Gardiner Expressway on-ramp, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including five nights between September 22, 2025 and October 24, 2025, inclusive, and for up to and including eight nights between December 1, 2026 and December 31, 2026, inclusive, and for up to and including two nights between June 1, 2027 and June 30, 2027, inclusive;

c. the southbound outside lane on the Don Valley Parkway, between 30 metres north of Queen Street and the Don Valley Parkway-F.G. Gardiner Expressway on-ramp, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including five nights between September 22, 2025 and October 24, 2025, inclusive, and for up to and including eight nights between December 1, 2026 and December 31, 2026, inclusive, and for up to and including two nights between June 1, 2027 and June 30, 2027, inclusive;

d. the eastbound inside lane on the F.G. Gardiner Expressway, between 90 metres west of Rees Street and the Don Valley Parkway-F.G. Gardiner Expressway off-ramp, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including five nights between September 22, 2025 and October 24, 2025, inclusive, and for up to and including eight nights between December 1, 2026 and December 31, 2026, inclusive, and for up to and including two nights between June 1, 2027 and June 30, 2027, inclusive;

e. the eastbound middle lane on the F.G. Gardiner Expressway, between 80 metres east of Lower Simcoe Street and the Don Valley Parkway-F.G. Gardiner Expressway off-ramp, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including five nights between September 22, 2025 and October 24, 2025, inclusive, and for up to and including eight nights between December 1, 2026 and December 31, 2026, inclusive, and for up to and including two nights between June 1, 2027 and June 30, 2027, inclusive;

f. the eastbound outside lane on the F.G. Gardiner Expressway, between 110 metres west of Bay Street and the Don Valley Parkway-F.G. Gardiner Expressway off-ramp, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including five nights between September 22, 2025 and October 24, 2025, inclusive, and for up to and including eight nights between December 1, 2026 and December 31, 2026, inclusive, and for up to and including two nights between June 1, 2027 and June 30, 2027, inclusive;

g. the Don Valley Parkway-F.G. Gardiner Expressway off-ramp, between the F.G. Gardiner Expressway and the Don Valley Parkway, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including five nights between September 22, 2025 and October 24, 2025, inclusive, and for up to and including eight nights between December 1, 2026 and December 31, 2026, inclusive, and for up to and including two nights between June 1, 2027 and June 30, 2027, inclusive;

h. the Don Valley Parkway northbound, all lanes, between the Don Valley Parkway-F.G. Gardiner Expressway off-ramp and 100 metres south of Eastern Avenue, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including five nights between September 22, 2025 and October 24, 2025, inclusive, and for up to and including eight nights between December 1, 2026 and December 31, 2026, inclusive, and for up to and including two nights between June 1, 2027 and June 30, 2027, inclusive;

i. the Bay Street-F.G. Gardiner Expressway eastbound on-ramp, between Bay Street and the F.G. Gardiner Expressway, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including five nights between September 22, 2025 and October 24, 2025, inclusive, and for up to and including eight nights between December 1, 2026 and December 31, 2026, inclusive, and for up to and including two nights between June 1, 2027 and June 30, 2027, inclusive; and

j. the Rees Street- F.G. Gardiner Expressway eastbound on-ramp, between Rees Street and the F.G. Gardiner Expressway, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including five nights between September 22, 2025, and October 24, 2025, inclusive, and for up to and including eight nights between December 1, 2026 and December 31, 2026, inclusive, and for up to and including two nights between June 1, 2027, and June 30, 2027, inclusive,

and exempt the General Manager, Transportation Services, in carrying out this delegated authority from Section 937-5 of Chapter 937, that being the requirement to notify the local Ward Councillor of the pending closure and the requirement to report on the proposed closure if so requested by the local Ward Councillor.

5. City Council amend City of Toronto Municipal Code Chapter 937, Temporary Closing of Highways, to delegate to the General Manager, Transportation Services, to facilitate the launching of east half of the Ontario Line Lower Don Bridge over the Don Valley Parkway, despite Section 937-4 of Code Chapter 937, the authority to temporarily close to vehicular traffic:

a. the southbound inside lane and adjacent pavement shoulder on the Don Valley Parkway, between 350 metres north of Gerrard Street and the Don Valley Parkway-F.G. Gardiner Expressway on-ramp, from 11:00 p.m. of one Friday to 5:00 a.m. on the following Monday for one weekend between January 15, 2026 and February 16, 2026, inclusive;

b. the southbound middle lane on the Don Valley Parkway, between 165 metres south of Gerrard Street and the Don Valley Parkway-F.G. Gardiner Expressway on-ramp, from 11:00 p.m. of one Friday to 5:00 a.m. on the following Monday for one weekend between January 15, 2026 and February 16, 2026, inclusive;

c. the southbound outside lane on the Don Valley Parkway, between 30 metres north of Queen Street and the Don Valley Parkway-F.G. Gardiner Expressway on-ramp, from 11:00 p.m. of one Friday to 5:00 a.m. on the following Monday for one weekend between January 15, 2026 and February 16, 2026, inclusive;

d. the eastbound inside lane on the F.G. Gardiner Expressway, between 90 metres west of Rees Street and the Don Valley Parkway-F.G. Gardiner Expressway off-ramp, from 11:00 p.m. of one Friday to 5:00 a.m. on the following Monday for one weekend between January 15, 2026 and February 16, 2026, inclusive;

e. the eastbound middle lane on the F.G. Gardiner Expressway, between 80 metres east of Lower Simcoe Street and the Don Valley Parkway-F.G. Gardiner Expressway off-ramp, from 11:00 p.m. of one Friday to 5:00 a.m. on the following Monday for one weekend between January 15, 2026 and February 16, 2026, inclusive;

f. the eastbound outside lane on the F.G. Gardiner Expressway, between 110 metres west of Bay Street and the Don Valley Parkway-F.G. Gardiner Expressway off-ramp, from 11:00 p.m. of one Friday to 5:00 a.m. on the following Monday for one weekend between January 15, 2026 and February 16, 2026, inclusive;

g. the Don Valley Parkway-F.G. Gardiner Expressway off-ramp, between the F.G. Gardiner Expressway and the Don Valley Parkway, from 11:00 p.m. of one Friday to 5:00 a.m. on the following Monday for one weekend between January 15, 2026 and February 16, 2026, inclusive;

h. the Don Valley Parkway northbound, all lanes, between the Don Valley Parkway-F.G. Gardiner Expressway off-ramp and 100 metres south of Eastern Avenue, from 11:00 p.m. of one Friday to 5:00 a.m. on the following Monday for one weekend between January 15, 2026 and February 16, 2026, inclusive;

i. the Bay Street-F.G. Gardiner Expressway eastbound on-ramp, between Bay Street and the F.G. Gardiner Expressway, from 11:00 p.m. of one Friday to 5:00 a.m. on the following Monday for one weekend between January 15, 2026 and February 16, 2026, inclusive; and

j. the Rees Street- F.G. Gardiner Expressway eastbound on-ramp, between Rees Street and the F.G. Gardiner Expressway, from 11:00 p.m. of one Friday to 5:00 a.m. on the following Monday for one weekend between January 15, 2026 and February 16, 2026, inclusive,

and exempt the General Manager, Transportation Services, in carrying out this delegated authority from Section 937-5 of Chapter 937, that being the requirement to notify the local Ward Councillor of the pending closure and the requirement to report on the proposed closure if so, requested by the local Ward Councillor.

6. City Council amend City of Toronto Municipal Code Chapter 937, Temporary Closing of Highways, to delegate to the General Manager, Transportation Services, to facilitate the installation of access scaffolding in August 2026 and its removal in November 2026 related to the Ontario Line Lower Don Bridge, despite Section 937-4 of Code Chapter 937, the authority to temporarily close to vehicular traffic:

a. the eastbound inside lane on the F.G. Gardiner Expressway, between Parliament Street and the Don Valley Parkway-F.G. Gardiner Expressway off-ramp, from, 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including two nights between August 1, 2026 and August 31, 2026, inclusive, and for up to and including two nights between November 1, 2026 and November 30, 2026, inclusive;

b. the east-to-northbound inside lane on the Don Valley Parkway-F.G. Gardiner Expressway off-ramp, between the F.G. Gardiner Expressway and the Don Valley Parkway, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including two nights between August 1, 2026 and August 31, 2026, inclusive, and for up to and including two nights between November 1, 2026 and November 30, 2026, inclusive;

c. the northbound inside lane on the Don Valley Parkway, between the Don Valley Parkway-F.G. Gardiner Expressway off-ramp and 100 metres south of Eastern Avenue, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including two nights between August 1, 2026 and August 31, 2026, inclusive, and for up to and including two nights between November 1, 2026 and November 30, 2026, inclusive;

d. the southbound inside lane on the Don Valley Parkway, between Dundas Street and the Don Valley Parkway-F.G. Gardiner Expressway on-ramp, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including two nights between August 1, 2026 and August 31, 2026, inclusive, and for up to and including two nights between November 1, 2026 and November 30, 2026, inclusive; and

e. the south-to-westbound inside lane on the Don Valley Parkway-F.G. Gardiner Expressway on-ramp, between the Don Valley Parkway and 150 metres south, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including two nights between August 1, 2026 and August 31, 2026, inclusive, and for up to and including two nights between November 1, 2026 and November 30, 2026, inclusive,

and exempt the General Manager, Transportation Services, in carrying out this delegated authority from Section 937-5 of Chapter 937, that being the requirement to notify the local Ward Councillor of the pending closure and the requirement to report on the proposed closure if so, requested by the local Ward Councillor.

7. City Council amend City of Toronto Municipal Code Chapter 937, Temporary Closing of Highways, to delegate to the General Manager, Transportation Services, to facilitate the installation of access scaffolding in August 2026 and its removal in November 2026 related to the Ontario Line Lower Don Bridge, despite Section 937-4 of Code Chapter 937, the authority to temporarily close to vehicular traffic:

a. the southbound outside lane on the Don Valley Parkway, between 50 metres north of Eastern Avenue and the Don Valley Parkway-F.G. Gardiner Expressway on-ramp, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including two nights between August 1, 2026 and August 31, 2026, inclusive, and for up to and including two nights between November 1, 2026 and November 30, 2026, inclusive;

b. the south-to-westbound outside lane on the Don Valley Parkway-F.G. Gardiner Expressway on-ramp, between the Don Valley Parkway and 150 metres south, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including two nights between August 1, 2026 and August 31, 2026, inclusive, and for up to and including two nights between November 1, 2026 and November 30, 2026, inclusive;

c. the eastbound outside lane on F.G. Gardiner Expressway, between Parliament Street and the Don Valley Parkway-F.G. Gardiner Expressway off-ramp, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including two nights between August 1, 2026 and August 31, 2026, inclusive, and for up to and including two nights between November 1, 2026 and November 30, 2026, inclusive;

d. the east-to-northbound outside lane on the Don Valley Parkway-F.G. Gardiner Expressway off-ramp, between the F.G. Gardiner Expressway and the Don Valley Parkway, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including two nights between August 1, 2026 and August 31, 2026, inclusive, and for up to and including two nights between November 1, 2026 and November 30, 2026, inclusive;

e. the northbound middle lane on the Don Valley Parkway, between the Don Valley Parkway-F.G. Gardiner Expressway off-ramp and 200 metres south of Eastern Avenue, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including two nights between August 1, 2026 and August 31, 2026, inclusive, and for up to and including two nights between November 1, 2026 and November 30, 2026, inclusive; and

f. the northbound outside lane on the Don Valley Parkway, between the Don Valley Parkway-F.G. Gardiner Expressway off-ramp and 100 metres south of Eastern Avenue, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including two nights between August 1, 2026 and August 31, 2026, inclusive, and for up to and including two nights between November 1, 2026 and November 30, 2026, inclusive,

and exempt the General Manager, Transportation Services, in carrying out this delegated authority from Section 937-5 of Chapter 937, that being the requirement to notify the local Ward Councillor of the pending closure and the requirement to report on the proposed closure if so, requested by the local Ward Councillor.

8. City Council amend City of Toronto Municipal Code Chapter 937, Temporary Closing of Highways, to delegate to the General Manager, Transportation Services, the authority to temporarily close to vehicular traffic:

a. the Don Roadway, southbound, between the Don Valley Parkway and Lake Shore Boulevard East, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including seven nights between May 26, 2025 and June 28, 2025, inclusive, to facilitate the monitoring equipment installation and lighting work related to the Ontario Line Lower Don Bridge;

b. the Don Roadway, northbound, between Lake Shore Boulevard East and the Don Valley Parkway, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including four nights between May 26, 2025 and June 28, 2025, inclusive, to facilitate the monitoring equipment installation and lighting work related to the Ontario Line Lower Don Bridge;

c. the Don Roadway, northbound and southbound, between the Don Valley Parkway and Lake Shore Boulevard, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including five nights between September 22, 2025 and October 24, 2025, inclusive, and for up to and including eight nights between December 1, 2026 and December 31, 2026, inclusive, and for up to and including two nights between June 1, 2027 and June 30, 2027, inclusive, to facilitate the installation and removal of trestle structure, final bridge adjustments and removal of monitoring equipment related to the Ontario Line Lower Don Bridge;

d. the Don Roadway, northbound and southbound, between Don Valley Parkway and Lake Shore Boulevard, from 11:00 p.m. on one Friday to 5:00 a.m. on the following Monday for one weekend between January 15, 2026 and February 16, 2026, inclusive, to facilitate the launching of east half of the Ontario Line Lower Don Bridge over the Don Valley Parkway;

e. the Don Roadway, southbound, between the Don Valley Parkway and Lake Shore Boulevard East, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including two nights between August 1, 2026 and August 31, 2026, inclusive, and for up to and including two nights between November 1, 2026 and November 30, 2026, inclusive, to facilitate the installation of access scaffolding in August 2026 and its removal in November 2026 related to the Ontario Line Lower Don Bridge; and

f. the Don Roadway, northbound, between Lake Shore Boulevard East and the Don Valley Parkway, from 11:00 p.m. of one day to 5:00 a.m. on the following day for up to and including two nights between August 1, 2026 and August 31, 2026, inclusive, and for up to and including two nights between November 1, 2026 and November 30, 2026, inclusive, to facilitate the installation of access scaffolding in August 2026 and its removal in November 2026 related to the Ontario Line Lower Don Bridge,

and exempt the General Manager, Transportation Services, in carrying out this delegated authority from Section 937-5 of Chapter 937, that being the requirement to notify the local Ward Councillor of the pending closure and the requirement to report on the proposed closure if so requested by the local Ward Councillor.

9. City Council amend City of Toronto Municipal Code Chapter 27, Council Procedures, to provide that the current delegation to Community Council to temporarily close public lanes or public alleys, local roads, collector roads and minor arterial roads, does not include closures delegated to the General Manager, Transportation Services, in carrying out the authority in Part 8 above.

10. City Council authorize the City Solicitor to introduce the necessary Bills to give effect to City Council’s decision and City Council authorize the City Solicitor to make any necessary clarifications, refinements, minor modifications, technical amendments, or by-law amendments as may be identified by the City Solicitor or the General Manager, Transportation Services, in order to give effect to Parts 1 to 9 above, inclusive.

This report provides an overview of Metrolinx’s construction plans for the Ontario Line Lower Don Bridge and the slope stabilization works at the Minton Place Portal, located within the Don Valley Crossing area. These works will involve temporary closures of the Don Valley Parkway, F.G. Gardiner Expressway, and Don Roadway at various stages between 2025 and 2027.

The report outlines key construction activities, associated staging plans, and temporary lane closures required to safely and efficiently deliver these infrastructure works. While most temporary lane closures occur during overnight hours to minimize impacts, one full weekend closure of the Don Valley Parkway is required to facilitate the launch of the new bridge structure.

In addition, the report requests City Council approval to amend City of Toronto Municipal Code Chapter 937, Temporary Closing of Highways, to provide a temporary delegation of authority to the General Manager, Transportation Services, to approve and implement temporary lane closures on the Don Valley Parkway and on the F.G. Gardiner Expressway for defined timeframes to support construction of the Ontario Line Lower Don Bridge and Minton Place Portal slope stabilization work.

The report also seeks City Council approval to amend both Chapter 937 as well as City of Toronto Municipal Code Chapter 27, Council Procedures, in order to delegate to the General Manager, Transportation Services, the authority to temporarily close the Don Roadway for defined timeframes in support of the Ontario Line Lower Don Bridge construction.

Together, these delegated authorities will support the timely delivery of the Ontario Line while enabling staff to respond to dynamic construction schedules, coordinate effectively with other major infrastructure projects, and minimize disruption to the public.