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
To support final paving operations on Dundas Street between Appleby Line and Tremaine Road, night work is scheduled to occur from and is expected to be complete by .
During the night work, a minimum of one lane in each direction will be maintained on Dundas Street, and access to and from Sutton Drive will be maintained except for short duration disruptions when Dundas Street is paved through the intersection.
At all other times, Dundas Street will be reduced to two lanes in each direction until the paving operations are completed.
The work is weather dependent and will be completed at night to ensure worker and motorist safety and reduce traffic impacts. Any unforeseen changes will be communicated in advance through electronic road signs and this webpage.
Motorists should expect significant delays when travelling through the area and are encouraged to find alternate routes. Transit users should also expect significant delays and longer than usual travel times through the affected area. We will make every effort to complete the construction work as quickly as possible to minimize the impact of the night work and lane restrictions.
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)