16th Avenue Accident Claims in Richmond Hill and Markham

16th Avenue is a major east-west York Region road which connects Richmond Hill and Markham. West of Yonge Street, the same Regional corridor is generally known as Carrville Road, so Richmond Hill collisions may be described as either 16th Avenue or Carrville Road accident claims. East of Yonge Street, 16th Avenue continues through residential, commercial and employment areas before crossing Highway 404 and travelling across Markham.

The road is also currently entering a period of substantial changes. York Region plans to widen 16th Avenue from Leslie Street to Kennedy Road from four to six lanes. The project includes bridge and culvert rehabilitation, intersection upgrades and new multi-use paths, with construction scheduled in stages from late 2026 through 2030.

Foster Injury Law’s Richmond Hill personal injury lawyers and Markham personal injury lawyers can represent people seriously injured along this roadway.

Who Controls Carrville Road and 16th Avenue?

Carrville Road and 16th Avenue form part of York Regional Road 73. York Region generally operates and maintains the Regional roadway. Richmond Hill and Markham control many adjoining local streets, while the Province of Ontario is responsible for Highway 404 and its provincial interchange infrastructure.

York Region explains the distinction between Regional, local and provincial roads.

The identify of the responsible governing body can change within a short distance.

Depending on where a collision began:

• York Region may hold road, signal or construction records for 16th Avenue;

• Richmond Hill or Markham may control an adjoining local street;

• Ontario may control a Highway 404 ramp or interchange structure;

• a utility provider may control temporary work beside or beneath the road; and

• a construction contractor or nearby property may possess relevant evidence.

Carrville Road and 16th Avenue Accidents in Richmond Hill

The Richmond Hill portion of the corridor runs from Carrville Road west of Yonge Street through the Yonge Street intersection and east along 16th Avenue toward Bayview Avenue, Leslie Street and Highway 404.

Our Richmond Hill personal injury lawyers represent people who become seriously injured in Carrville Road and 16th Avenue accidents and other crashes throughout Richmond Hill.

Carrville Road, 16th Avenue and Yonge Street

The road name changes at one of Richmond Hill’s busiest intersections. Carrville Road approaches Yonge Street from the west, while 16th Avenue continues east.

Drivers could be travelling through the intersection, turning between Yonge Street and the east-west corridor or entering nearby residential and commercial properties. Buses, pedestrians and turning vehicles can follow different paths through the same intersection.

If two drivers provide conflicting accounts of how a crash happened, the investigation may need to establish:

• which lane each vehicle occupied;

• whether a protected turn phase was operating;

• when each vehicle entered the intersection;

• whether congestion prevented a vehicle from clearing it;

• whether another vehicle restricted visibility; and

• whether a witness saw the vehicles before impact.

York Region permits requests for signal-timing plans and traffic-signal timing letters for Regional-road intersections.

Signal plans can illustrate the programmed sequence and duration of the phases. By itself, it will not necessarily prove which indication was displayed to a particular driver at the precise moment of a collision. Video, witnesses, maintenance information and any available controller records may provide additional evidence.

16th Avenue near Bayview Avenue and Leslie Street

East of Yonge Street, 16th Avenue passes residential communities, schools, property entrances and several large intersections.

A collision that happens near Bayview Avenue might entail vehicles turning across several lanes of traffic or entering from adjoining neighbourhoods. Closer to Leslie Street, the road approaches Highway 404 and the western limit of the planned widening project.

The Leslie Street area is scheduled to be part of the first construction stage. For a collision occurring after work begins, the investigation should determine whether the permanent road design, utility relocation work or a temporary construction configuration was in place.

16th Avenue Accidents Near Highway 404

16th Avenue crosses Highway 404 near the Richmond Hill–Markham boundary. A collision described as occurring at 16th Avenue and Highway 404 may have begun on the Regional road, within a signalized ramp intersection or on provincial infrastructure.

That distinction can affect:

• whether York Region or Ontario controlled the collision location;

• which signal, maintenance and construction records are relevant;

• whether a driver had recently entered from Highway 404;

• where a lane change or braking event began; and

• whether traffic was already queuing from an interchange ramp.

A vehicle may leave Highway 404 and reposition after entering 16th Avenue while another driver continues toward Leslie Street or Woodbine Avenue. Where both drivers claim to have occupied the lane first, dashcam footage, lane markings, vehicle damage and electronic vehicle data may help reconstruct the sequence.

Our article about Highway 404 accident claims near Newmarket and Markham addresses collisions that begin on the controlled-access highway, including interchange congestion and disputed lane changes.

16th Avenue Car Accidents in Markham

East of Highway 404, 16th Avenue continues through Markham near Woodbine Avenue, Warden Avenue, Kennedy Road, McCowan Road, Markham Road, Ninth Line and Donald Cousens Parkway.

The western section of the road encompasses employment and commercial properties near Highway 404 and Woodbine Avenue. Farther east, 16th Avenue passes established residential communities, schools, shopping areas and Markham Village before continuing toward newer development.

Our Markham personal injury lawyers are able to investigate serious 16th Avenue car accidents and other injury claims throughout Markham.

16th Avenue and Woodbine Avenue

Woodbine Avenue lies within the first planned construction stage. The intersection also has several distinct traffic controls.

York Region lists a red-light camera at Woodbine Avenue and 16th Avenue. Its 2026 road-safety program lists a left-turn restriction from 9255 Woodbine Avenue onto 16th Avenue. Separately, York Region identifies 16th Avenue and Woodbine Avenue as one of its 2026 digital no-right-on-red locations, with the sign activated by the pedestrian push button.

These controls serve different purposes. A red-light camera captures enforcement images when a vehicle enters after the signal has turned red; it should not be treated as continuous video of everything occurring at the intersection.

A collision investigation might need to determine:

• which direction each vehicle entered from;

• whether a turn restriction applied to the movement;

• which signal controlled the driver;

• whether a vehicle entered from a private access;

• whether temporary work had changed the lane arrangement; and

• whether enforcement, private or dashcam images exist.

16th Avenue between Warden Avenue and Kennedy Road

The second stage of the road widening program is scheduled to impact the Warden-to-Kennedy section from 2028 through 2030.

This portion of Markham encompasses residential communities, schools, side streets and property entrances. Construction could potentially produce temporary lane shifts, narrower lanes, revised turns and different stages of work at separate points along the road.

A person who is familiar with 16th Avenue might remember an earlier layout that was no longer in place when the collision occurred. Photographs and project records should establish the configuration on the collision date rather than relying on a later site inspection or online image.

16th Avenue through central and eastern Markham

Beyond Kennedy Road, 16th Avenue continues toward McCowan Road, Markham Road, Ninth Line and Donald Cousens Parkway.

York Region’s 2026 road-safety program lists “Do Not Block Intersection” pavement markings and warning signs at 16th Avenue and Peter Street, with the timing shown as spring 2026.

A crash which occurs in this area could entail a vehicle entering despite a queue ahead, traffic stopped across the intersection or a driver attempting to move around blocked lanes. The markings, surrounding traffic and sequence before impact may be more informative than the vehicles’ final positions.

Farther east, the spacing between intersections and the surrounding properties change. The investigation should account for the speed limit, lighting, sightlines, roadside access, pavement markings and traffic controls at the specific collision location rather than treating the entire Markham corridor as uniform.

How Can the 16th Avenue Reconstruction Affect Collision Evidence?

York Region plans to widen 16th Avenue from Leslie Street to Kennedy Road from four to six lanes.

The project includes:

• road widening;

• rehabilitation of bridges and culverts;

• intersection upgrades;

• multi-use paths;

• streetscaping; and

• tree planting.

Construction from Leslie Street to Warden Avenue is scheduled from late 2026 through 2029. Work from Warden Avenue to Kennedy Road is scheduled from 2028 through 2030.

The 16th Avenue improvement project will proceed through different stages rather than one temporary road layout lasting for the entire project.

Utility relocation

Before the main widening work, hydro, gas and telecommunications providers may need to relocate their infrastructure. York Region states that the providers lead their own construction processes, including their construction methods and traffic operations.

Crashes that happen near temporary work should not automatically be attributed to the York Region project. Responsibility may depend on whether the work was controlled by York Region, a Regional contractor, a utility provider or another organization.

Relevant records might include utility plans, traffic-control drawings, inspection reports, lane-closure information and contractor photographs.

Proving the configuration on the collision date

The road must be assessed as it existed when the crash occurred. Later photographs may show additional lanes, revised signals or permanent multi-use paths that were not yet present. Older online images may omit temporary arrangements that existed for only a short period.

Useful evidence can include:

• photographs and videos taken shortly after the collision;

• dashcam footage;

• construction-stage drawings;

• traffic-control plans;

• daily inspection records;

• contractor or utility photographs;

• signal records; and

• nearby surveillance.

Frequently Asked Questions About 16th Avenue Accident Claims

Are Carrville Road and 16th Avenue the same road?

They are names used along the same York Regional Road 73 corridor. Carrville Road is considered west of Yonge Street in Richmond Hill, while 16th Avenue continues east through Richmond Hill and Markham.

Who maintains 16th Avenue in Richmond Hill and Markham?

York Region generally operates and maintains 16th Avenue as a Regional road. Richmond Hill and Markham control many adjoining local streets, while Ontario controls Highway 404 and its provincial interchange infrastructure.

When is the 16th Avenue widening scheduled?

York Region schedules construction from Leslie Street to Warden Avenue from late 2026 through 2029. Work from Warden Avenue to Kennedy Road is scheduled from 2028 through 2030.

16th Avenue Accident Lawyers Serving Richmond Hill and Markham

Foster Injury Law represents is able to represent those who have been seriously injured in car accidents on 16th Avenue, Carrville Road and other roads throughout Richmond Hill, Markham and York Region.

We offer free consultations and contingency-fee representation. Legal fees are not charged unless compensation is recovered.

Contact Foster Injury Law at 705-408-4438 or complete our online consultation form to discuss a serious 16th Avenue or Carrville Road accident claim.