Dundas Street Improvements
About this project
Improvements will address future traffic demands and provide safe travel options for motorists, pedestrians and cyclists and include:
- Widening from four to six lanes
- Road resurfacing
- New multi-use paths and sidewalks
- New bus stops and shelters
- Upgraded stormwater management infrastructure
- New traffic signals and street lights
- New on-road bike lanes
- Environmental protection measures
- New bridges
Equipment for the Regional Advanced Traffic Management System (ATMS) will also be installed. The ATMS is a traffic signal control system that enables real-time signal adjustments to save time, reduce emissions and improve safety for motorists.
Project details
Improvements phases
Phase 1
Phase 2
Phase 3
Project renderings
Explore the images below for what you can expect to see once improvements are complete.
Cross section
Phase 1 (Appleby Line to Bronte Road)
Improvements include:
- road widening
- bike lanes
- multi-use paths with barriers
Improvements include:
- road widening
- bike lanes
- multi-use paths
Improvements include:
- road widening
- bike lanes
- multi-use paths
- bus shelter
Improvements include:
- road widening
- bike lanes
- multi-use paths
Improvements include:
- road widening
- lookout points
- multi-use paths with barriers
- bike lanes
Project map
Project Timeline
Phase 1
Environmental Assessment completed.
Detailed design completed for Phase 1.
Construction start for Phase 1.
Anticipated project completion for Phase 1.
Phase 2
Detailed design anticipated to be completed for Phase 2.
Phase 3
Detailed design anticipated to be completed for Phase 2.
What you can expect day-to-day
Dundas Street is a major east-west corridor that many residents and motorists rely on to get to work, school, home and retail every day. Halton Region is making every effort to minimize the disruptions and help you plan ahead for construction activity the extension will create.
Learn more about what to expect day-to-day, our mitigation plans and how to stay connected on the project.
I'm a resident or business in the area
I use this road regularly
Bronte Creek restoration
Latest traffic updates and notices
Traffic updates
Night work and Lane Restrictions, Appleby Line to Tremaine Road
Night work to support final paving operations on Dundas Street between Appleby Line and Tremaine Road has been completed.
To support the remaining final pavement marking operations, Dundas Street will remain reduced to two lanes in each direction. The lane restrictions are expected to be completed by Friday, October 23, 2026.
We will make every effort to complete the work as quickly as possible to minimize the impact. The work is weather dependent and any changes will be communicated in advance through electronic road signs and this webpage.
Longer than usual travel times through the area can be expected. Please plan ahead and drive safe.
Latest notices
- September 25, 2026: Notice of Night Work & Lane Restrictions, Appleby Line to Tremaine Road (PR-2672B) (external link)
- September 10, 2026: Notice of Night Work, Tremaine Road to Bronte Road (PR-2671B) (external link)
- September 2, 2026: Notice of Construction Update, Appleby Line to Tremaine Road (PR-2672B) (external link)
- December 17, 2025: Notice of Construction Update, Appleby Line to Tremaine Road (PR-2672B) (external link)
- August 20, 2024: Notice of Construction, Tremaine Road to Bronte Road (PR-2671B) (external link)
- June 7, 2021: Notice of Construction, Appley Line to Tremaine Road (PR-2672B) (external link)