> Scarborough Junction Grade Separation - Your Feedback | Metrolinx Engage

Scarborough Junction Grade Separation

Scarborough Junction Grade Separation - Your Feedback

A project of this size and complexity means that changes will occur in communities and some communities close to where infrastructure is being delivered may feel impacted by it. Hearing from you is important to us. We want to make sure we are delivering maximum results with minimum disruption to the community. Public feedback was collected regarding the Scarborough Junction Grade Separation TPAP from February to December 2020.

The table below provides a snapshot summary of the main topics we've heard in Round 1 of public consultation and what we are doing about it. View the full Round 1 Engagement Report.

 

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What We Heard

What We’re Doing About It

Concerns about potential noise, vibration, traffic, property and natural environment impacts of proposed infrastructure, including grade separated tracks.

Metrolinx has developed a conceptual design to determine the optimal configuration proposed infrastructure, reviewed background information, and conducted field investigations to determine baseline environmental conditions.

This information has been used to inform impact assessment and develop mitigation measures to address environmental impacts.

Find out more in the Studies, Impacts, and Mitigation section.

Advice to ensure that the proposed Corvette Park multi-use crossing options are safe for all users.

What We’re Doing About It

To maintain pedestrian and cyclist connectivity, Metrolinx is considering options for a new multi-use crossing to either pass over or under the rail corridor (through a new bridge or tunnel). Based on ongoing discussion with the City, Metrolinx is obtaining TPAP approval for both bridge and tunnel options.

Find out more on Corvette Park Crossing Options panel in the Proposed New Infrastructure section.

Interest to learn about the anticipated construction timeline

What We’re Doing About It

Construction is anticipated to last up to two years (it could start as early as 2022, subject to change).

Find out more in the Anticipated TPAP Timeline section.

 

If you would like to look at the public materials from the February 2020 Open Houses, including meeting boards and Info Sheets, please click here.

Round 2 of public consultation was held online from August 18 to September 1, 2020. The full Round 2 Engagement Report is available here. The table below provides a snapshot summary of the main topics we've heard in Round 2 of public consultation and what we are doing about it. The full Round 2 Engagement Report is available here.

What We Heard

What We’re Doing About It

Interest in the proposed Corvette Multi-Use bridge crossing.

Metrolinx considered feedback received to date, held further discussions both internally and externally, and has determined a bridge crossing at Corvette Avenue is preferred over a tunnel crossing. However, both the bridge and tunnel options are evaluated in the Environmental Project Report to maintain consistency with messaging previously communicated during Rounds 1 and 2.

The bridge allows for transparent protection barriers to reduce visual impact and maximize natural lighting. The design of the bridge will be further refined during detailed design and will align with Crime Prevention Through Environmental Design principles to the extent feasible.

Find out more on the Corvette Multi-Use Bridge Crossing in the Proposed New Infrastructure section.

Concerns about potential noise, vibration, traffic, property and natural environment impacts of proposed infrastructure, including grade separated tracks.

Metrolinx has reviewed background information and conducted field investigations to determine baseline environmental conditions. The baseline conditions were used as the basis for measuring the potential environmental effects of the proposed works and to inform the identification of appropriate avoidance or mitigation measures.

The majority of technical reports were posted to Metrolinx Engage for review as part of Public Consultation Round 2. The remaining technical reports and Environmental Project Reports for were released for public review during Round 3.

Construction Noise/Vibration

The Project has the potential to result in noise and vibration effects during construction from detours (e.g., operation of the road and rail corridor detours during construction) and Project construction activities (e.g., heavy equipment operation, piling driving, etc.). As recommended in the Construction Noise and Vibration Assessment Report, Metrolinx will require the Constructor to develop a Construction Noise Management Plan which will outline mitigation measures to limit effects. Operational Noise and Vibration studies are being undertaken as part of a separate process. Please visit the GO Rail Network Electrification Addendum project website for more information.

Traffic

A staged closure at the Danforth Road / Midland Avenue intersection approach was determined to result in the least level of impact from a traffic movement perspective and is expected to maintain regional mobility and local access as well as pedestrian and cycling connectivity. Once construction is complete, there will be benefits associated with the new rail/road grade separation at Danforth Road/Midland Avenue for the road and transit networks, as well as pedestrians and cyclists, since conflicts with trains will be avoided.

Based on a high-level analysis, to accommodate construction works at St. Clair Avenue East, works can be accommodated through temporary lane closures. Sidewalks will remain open to ensure that pedestrians can be accommodated through the construction zone.

The new multi-use crossing at Corvette Park will replace the existing at-grade crossing, which will avoid potential conflicts with trains.

Metrolinx will require the Constructor to prepare a Traffic Control and Management Plan to maintain reasonable access through work zones, to the extent feasible. Metrolinx will coordinate the applicable municipality to determine appropriate changes to traffic signal timings during construction.

To mitigate the potential effects to pedestrian and cyclist activities during construction, Metrolinx will ensure the appropriate wayfinding, regulatory and warning signs are installed. To the extent feasible, Metrolinx will avoid simultaneous closures of the existing Corvette multi-use crossing, and Midland Avenue/Danforth Road crossings.

As transit routes will also be affected, Metrolinx will work with the TTC to establish a suitable mitigation strategy. Metrolinx will also ensure that the public is notified in advance of any potential service disruptions.

Property

Temporary and permanent property impacts are anticipated as a result of the Project and will be confirmed during the detailed design stage. In advance of each of the Public Meetings, Metrolinx has reached out to potentially impacted property owners via letters, to discuss the specifics of any property requirement. Metrolinx will continue to communicate with impacted property owners as the Project progresses.

Natural Environment

The Project has the potential to result in permanent and temporary effects during construction (i.e., loss of vegetation along the corridor right-of-way, effects on wildlife due to anticipated vegetation removal, accidental collisions). The potential for effects during operation will be limited, once permanent infrastructure is established.

Metrolinx has developed a Vegetation Guideline to guide compensation works for any trees requiring removal or injury as a result of the Project. All applicable bylaws, regulations, and associated requirements for tree injuries and removals outside of Metrolinx properties will be adhered to. For vegetation removals, Metrolinx will also consider and mitigate potential impacts to migratory birds, Species at Risk, and features, e.g., Designated Natural Areas and Significant Wildlife Habitat.

Prior to construction, Metrolinx will require an investigation of the Project Footprint for wildlife and wildlife habitat will be undertaken to confirm findings of previous surveys, as appropriate. If wildlife is encountered, measures will be implemented to avoid destruction, injury, or interference with the species, and/or its habitat.

Find out more in the Studies, Impacts, and Mitigation section.

Questions regarding the proposed relocation of Scarborough GO Station building

Scarborough GO Station does not accommodate enough space for a new track, as such Metrolinx is proposing to modify or relocate the GO Station building within the existing property boundaries. Metrolinx will ensure the building modification or relocation will at a minimum provide the same amenities as the existing station. There is currently parking for approximately 625 vehicles, which will be maintained. Modification or relocation of the Scarborough GO Station building may result in the need to relocate the pedestrian tunnels associated with the south platform as well as the associated elevators. The south platform will be accessible via stairs or elevators from the south parking lot.

Design details for the building modification or relocation are currently in the preliminary stages. Information provided in the Environmental Project Report provides a conceptual consideration of potential effects. As more detail is confirmed on the design approach for the GO Station, Metrolinx will provide additional detail in the final Environmental Project Report, or through ongoing post-environmental assessment consultation with stakeholders. Find out more on Scarborough GO Station panel in the Proposed New Infrastructure section.

Interest in the Midland Layover, where trains will be coming from and why the layover is required

With the planned increase in service along the Stouffville and Lakeshore East Rail Corridors, Metrolinx anticipates the need to have storage for railcars to accommodate passenger demand. The Midland Layover will provide multiple options for trains to be brought into service anywhere along the Lakeshore East and Stouffville Rail Corridors. Or Click here to read our panels about the Midland Layover.

Concerns about whether the work and service levels proposed in this Project will conflict with VIA Rail’s proposal for High Frequency Rail (HFR), and whether the corridors have enough capacity to support both GO Expansion and HFR service

Metrolinx has shared its plans for the Scarborough Junction Grade Separation Project with VIA Rail as part of the TPAP consultation efforts. Metrolinx will continue to work with VIA Rail as they advance their planning for the HFR Project. Metrolinx and VIA Rail are working together on this matter and will seek to maximize the public benefit of infrastructure investments. 

If you would like to look at the public materials from the August 2020 Virtual Public Meeting, including meeting boards and information, please click here.

Round 3 of public consultation was held online from November 27 to December 11, 2020!

  • New information that was presented in Round 3 included: Completed environmental studies for Socio-Economic and Land Use and Stage 1 Archeological Assessment, effects and mitigation for Utilities and the Midland Layover, and Operation Noise, Vibration and Air quality.

The table below provides a snapshot summary of the main topics we've heard in Round 3 of public consultation and what we are doing about it. View the public materials from Round 3 of the consultation.

View the Round 3 Engagement Report

What We Heard

What We’re Doing About It

Detailed construction traffic mitigation plan.

A Transportation Impact Assessment (TIA) was undertaken for the Scarborough Junction Grade Separation Project . A staged closure approach was determined to result in the least level of impact from a traffic movement perspective at Danforth Road/Midland Avenue and is expected to maintain regional mobility, local access, as well as pedestrian and cycling connectivity. The TIA demonstrated that construction works at St. Clair Avenue East can be accommodated through temporary lane closures. Sidewalks will remain open to ensure that pedestrians can be accommodated through the construction zone. Other roadways within the Transportation Assessment Area are not anticipated to be substantially affected during construction activities.

The following mitigation measures are recommended prior to the start of construction (e.g., tentatively expected to commence in 2022):

Mitigation measures were provided during Round 2 of the Public of the public meetings.

  • Traffic Control and Management Plan(s) will be developed prior to construction to maintain reasonable access through work zones, to the extent possible.
  • Access to nearby land uses will be maintained to the extent possible.
  • Potentially affected residents, tenants and business owners will be notified of initial construction schedules, as well as modifications to these schedules as they occur.
  • Potential effects to pedestrian and cyclist activities during construction will be mitigated through the installation of appropriate wayfinding, regulatory, and warning signs.

Why is Midland layover required?

Layover facilities are used to store trains and are strategically located throughout the rail network to accommodate service expansion.

To meet increasing service levels, the Midland Layover is required for:

  • Storing railcars during the day and night
  • Reducing rail congestion on the Lakeshore East Corridor

For more information, please view the Midland Layover panels.

What is a rail-rail grade separation?

A rail-rail grade separation is a new structure that allows one track to pass over or under existing tracks (in this case, a new tunnel is proposed to go under the Lakeshore East corridor) Given the service increases and resulting increased train volumes, current track configuration at the Scarborough Junction will not provide for effective train movement between the Stouffville and Lakeshore East lines. Currently, north-south trains along the Stouffville line cross three tracks at-grade by switching; creating potential train conflicts and delays. With future increased service and the additional track, at-grade switching will not be feasible to maintain train flow. Therefore, a grade separation between the Stouffville Line and the Lakeshore East Line is proposed at the Scarborough Junction for the purpose of removing train conflicts between the Stouffville and Lakeshore East lines and meeting service targets.

For more information on this, please view the infrastructure panels from Round 1 .

Will all-day service on Stouffville line be maintained during the construction phases?

Metrolinx plans to maintain all-day service on the Stouffville line during the construction phases.

 

If you would like to look at the public materials from Round 3 of consultation please click here.

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