Ontario Salting & Plowing Road Clean Time Calculator: Your Guide to Winter Road Maintenance
Winter in Ontario brings beautiful snowfalls but also challenging driving conditions. Whether you're a daily commuter, a business owner relying on deliveries, or simply planning a trip across the city, knowing when roads will be cleared is essential. The Ontario Salting & Plowing Road Clean Time Calculator helps you understand and predict how quickly different types of roads are treated during winter storms, based on official municipal standards from the City of Toronto.
Before snow starts to fall, patrols continuously check road conditions while staff monitor weather forecasts and pavement temperature. Crews work to clear Toronto's road lanes, sidewalks and cycle tracks (including separated bike lanes, on-road bike lanes and multi-use trails) until the storm is over. Understanding these operational standards helps residents and commuters plan their travel and set realistic expectations during winter weather events.
When Roads Are Salted & Plowed
The City of Toronto follows a structured approach to winter road maintenance. Different road types receive service based on their priority in the transportation network.
| Road Type | When does the City start salting? | How many hours to salt each round? | When does the City start plowing? | How many hours to plow each round? |
|---|---|---|---|---|
| Expressways (Don Valley Parkway & Gardiner Expressway) | When snow first accumulates | 2 hours | 2.5 cm | 2 hours |
| Major roads, transit routes and streets with hills | When snow first accumulates | 4 hours | 5 cm | 6-8 hours |
| Residential streets | When snow first accumulates | 8 hours | 8 cm | 14 hours |
Detailed Levels of Service
Direct Liquid Application (Brine)
In advance of snow or ice, anti-ice trucks will apply salt brine to expressways, hills and bridges. People who drive should always keep a safe distance behind the brine trucks. You can tell where salt brine has been applied by the grey lines left by the salt on the road surface.
| Road Type | Initiation Level | Maximum Operating Time | Required Outcome |
|---|---|---|---|
| Expressway | As required | 6 hours | Visible salt residue |
| Arterials | As required | 6 hours | Visible salt residue |
| Collector | As required | 6 hours | Visible salt residue |
Salting Operations
| Road Type | Initiation Level | Maximum Operating Time | Required Outcome |
|---|---|---|---|
| Expressway | < 2.5 cm | 2 hours | Bare pavement |
| Arterials | < 5 cm | 4 hours | Bare pavement |
| Collector | < 8 cm | 4 hours | Centre bare |
| Local Roads | < 8 cm | 8 hours | Safe and passable |
| Laneways | 24 hours from end of snowfall | - | Safe and passable |
Plowing Operations
| Road Type | Initiation Level | Maximum Operating Time | Required Outcome |
|---|---|---|---|
| Expressway | 2.5 cm | 2 hours | Bare pavement |
| Arterials | 5 cm | 6 hours | Bare pavement |
| Collector | 8 cm | 8 hours | Centre bare |
| Local Roads | 8 cm | 14 hours | Safe and passable |
| Windrow Clearing | Same as adjacent roadway plus 2 hours | - | Safe and passable |
Combined Salting & Plowing Operations
| Infrastructure | Initiation Level | Maximum Operating Time | Required Outcome |
|---|---|---|---|
| Sidewalks | 2 cm | 12 hours | Safe and passable |
| Bus Stops & Pedestrian Crossovers | 2 cm | 12 hours | Safe and passable |
| All Cycling Infrastructure | 2 cm | 8 hours | Safe and passable / Bare pavement |
| Hand Crews | Same as work area | - | As required |
Required Outcome Definitions
Bare pavement: Denotes fully cleared snow from a driving surface.
Centre bare: Indicates 2.5 m of snow is cleared from the centre of a driving surface.
Safe and passable: A road surface that is free from as much ice and snow as is practical and may be traveled safely at reasonable speed. Residential streets after snow clearing may have some snow on the road surface but remain navigable.
The City manages salt use carefully, balancing the need to keep roads safe with environmental considerations. You can report a snow related issue to 311 by creating a service request.
Driveway Windrow Openings
Residential Streets
Using a specialized machine that follows the snow plows, crews will clear three meter wide driveway openings on eligible residential streets.
Collector and Arterial Roads
Using a specialized machine that follows the snow plows, crews will clear three meter wide driveway openings on eligible collector and arterial roads if the windrow (snow pile) exceeds 25 centimeters.
Timeline
The City aims to clear three meter wide driveway windrows within two hours of road plowing. However, the time needed to complete windrow clearing depends on a variety of factors such as the size of the plow driver's route, the amount of snow that has accumulated, on-street parking and other potential obstructions.
How to Use the Ontario Salting & Plowing Road Clean Time Calculator
The calculator tool helps you estimate road clearance times based on:
- Road Type – Expressway, major road/transit route, or residential street
- Service Type – Salting, plowing, or windrow clearing
- Snow Accumulation – Current or forecast snowfall depth in centimeters
Based on official City of Toronto standards, the calculator provides estimates for when operations begin, how long each round takes, and the expected road condition outcome. During ongoing snowfall, multiple rounds may be necessary to maintain safe conditions.