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Dundas BRT

Preliminary Designs

What is the preliminary design process?

The preliminary design process bridges the gap between the design concept and detailed design of a project.

During this time, the project team completes studies and analyses to compare and determine the technically preferred alternatives, leading to the 10% Preliminary Design of the project.

These preferred alternatives are then analyzed through the Preliminary Design Business Case (PDBC), which identifies risks and barriers that may impact the project, assists in refining the service plan for the corridor and establishes the preferred alternative which is then developed to a 30% Preliminary Design level.

Preliminary design for the Dundas BRT project to-date is outlined in detail in the following slides, including: 

  • Progression of corridor design outside pinch points;  
  • Evaluation and identification of the preferred alternatives for the pinch point in Mississauga East;  
  • Commencement of evaluation for converting of High Occupancy Vehicle (HOV) lanes to dedicated BRT lanes within Halton and Hamilton;  
  • Evaluation of alternatives for the pinch point in Mississauga West;  
  • Progression of concept designs for typical median and curbside stops, including amenities; and  
  • Identification of stop locations within Mississauga East. 

Preliminary design – Design progressed for the Mississauga BRT corridor

The BRT Corridor outside constrained areas, or pinch points, of the Mississauga locations are identified as:  

  • Etobicoke Creek to Jaguar Valley Drive – Mississauga East  
  • Confederation Parkway to The Credit Woodlands – Mississauga West  
  • Mississauga Road to Ninth Line – Mississauga West  

Since the last round of engagement, the above areas have been developed to a 10% Preliminary Design level, based on designs presented in the Dundas Connects Master Plan and the Initial Business Case. The outcomes of this design are:  

  • Right-of-way (ROW) widened up to 42 m (from existing ROW of approximately 22 - 40 m in the Cooksville pinch point, and approximately 36 - 40m outside of the pinch point), requiring property acquisition with potential impacts to landscaping, entrances and parking, buildings and structures  
  • Dedicated median BRT lanes to improve transit speed and reliability  
  • Maintains two general purpose traffic lanes in each direction  
  • Enhanced active transportation  
  • Enhanced public realm, where possible  

Special Policy Area (SPA) Studies 

Coordination with the following City of Mississauga SPA studies is ongoing to ensure that the Etobicoke Creek and Little Etobicoke Creek crossings are optimized to meet the goals and objectives of both the Dundas BRT and SPA studies:  

  • Dixie-Dundas Flood Mitigation EA Study (Little Etobicoke Creek SPA)  
  • Etobicoke Creek SPA Feasibility Study  

Dundas Street will be widened in certain areas to accommodate the proposed BRT lanes and facilities, including four general purpose traffic lanes, cycling facilities, wider sidewalks, and amenity space for utility poles, trees and street furniture. 

Cross Section: An example of curbside BRT with reserved bus lanes on Dundas Street.

Cross Section: An example of median BRT on Dundas Street.

Preliminary design – proposed changes to the Mississauga right-of-way 

Widening of the right-of-way (ROW) is required to allow for the addition of dedicated BRT lanes within the corridor, which will improve bus transit service operations and efficiency in the area.  

Since the existing road right-of-way is less than the planned ROW of up to 42 m, additional property will be required in certain areas along Dundas Street to accommodate the widened corridor. This may impact structures, parking, entrances, landscaping, or other features.  

Opportunities to mitigate potential impacts to properties, where possible, will be explored through:  

  • Optimization of the corridor alignment (e.g., widened to north, or south, or about existing centreline);  
  • Applying minimum standards for design elements such as lane widths and platform widths; and  
  • Reducing boulevard space that can be widened and enhanced through future land redevelopments. 

Preliminary design – pinch points 

Two pinch points within Mississauga were identified during the last round of engagement:  

  • Cooksville – Mississauga East  
  • Erindale Valley – Mississauga West  

Since the last round of engagement, these pinch points have undergone analyses to understand potential solutions to the challenges identified. The analyses also incorporated public feedback gathered through the last round of engagement regarding how to address pinch points and evaluate alternative design solutions.

Pinch Points

The Dundas BRT - Pinch Points - Cooksville Area

As work for Mississauga East is advancing ahead of other areas along the Dundas BRT corridor, an additional evaluation process has been applied to the Cooksville pinch point to meet the requirements of the Investing In Canada Infrastructure Program (ICIP).

The Dundas BRT - Pinch Points - Erindale Valley Area

The Erindale Valley area is constrained due to the need to protect the natural environment of the Credit River Valley and Erindale Park. There are also several heritage sites that need to be considered between Mississauga Road and The Credit Woodlands.