Applications and supporting documentation in Ontario
Requirements for submitting an application, including supporting load and vehicle documents, financial assurances, submission procedures and processing timelines.
9 facts, each with the passage it comes from, quoted from 2 official sources.
Where to apply
Where an application for Applications and supporting documentation is submitted in Ontario.
Online · Ministry of Transportation
PRIO online permitting system
prio.mto.gov.on.ca (opens in a new tab)
Before you apply online for the first time, you must register to use the online services by completing a user account form and emailing it to the Ministry of Transportation’s Oversize/Overweight Permit Office at oo.permits@ontario.ca. Once your online services account has been set up, you can use it to apply for as many permits as you need.
Phone · Ministère des Transports
Bureau de délivrance de permis, par téléphone
Contact the permit issuing office during business hours if the route indicated on your permit needs to be changed.
Phone · Ministère des Transports
Bureau de délivrance de permis, par téléphone (sans frais)
Contact the permit issuing office during business hours if the route indicated on your permit needs to be changed.
Mail · Ministry of Transportation
Highway Operations Permits Office
Ministry of Transportation Highway Operations Permits Office 301 St. Paul Street, 2nd Floor St Catharines, Ontario L2R 7R4
Download and complete an application form. Include payment (Canadian funds only) by visa or Mastercard using an authorization form, cheque made out to the Ministry of Finance, bank draft, money order or certified cheque made out to the Ministry of Finance.
Mail · Ontario Ministry of Transportation (MTO) Permit Issuing Office
Permit Issuing Office, by mail
301 St. Paul Street, 3rd Floor, St Catharines, Ontario, L2R 7R4
Application forms must be completed in full. Incomplete applications will be returned.
In person · Ontario Ministry of Transportation (MTO) Permit Issuing Office
Permit Issuing Office
301 St. Paul Street, 3rd Floor, St Catharines, Ontario, L2R 7R4
Email · Ministry of Transportation
Oversize/Overweight Permit Office, by email
Use it when: For Permitting and Registration for International Registration Plan and Oversize/Overweight (PRIO) online permitting system account set up, tow truck certificate applications, special vehicle configuration permits or project permits
Fax · Ministry of Transportation
Highway Operations Permits Office, by fax
905-704-2545
Use it when: Until January 1, 2026
Download and complete an application form. Include payment (Canadian funds only) by visa or Mastercard using an authorization form, cheque made out to the Ministry of Finance, bank draft, money order or certified cheque made out to the Ministry of Finance.
Start with a question
Open a question to read the facts on file that bear on it.
How is a pre-approval file number obtained, and where and how must a superload permit application be submitted?Nothing on file for Ontario answers this yet.
What shipper statements, load-reduction certifications, project justifications and damage-responsibility letters must accompany an application?Nothing on file for Ontario answers this yet.
What vehicle and axle specifications, drawings and engineer-certified crane information are required?Nothing on file for Ontario answers this yet.
What surety bond is required, and how is its amount determined?Nothing on file for Ontario answers this yet.
Facts
7 topics
Minimum application lead time for superload overweight permit (Measures)
The minimum number of days before the intended move that an application for a superload overweight permit must be submitted.
5 days
Superload application submission office (In words)
The office or authority to which all applications for the movement of superloads must be submitted.
Ontario Ministry of Transportation (MTO) Permit Issuing Office
Minimum application lead time for superload oversize permit (Measures)
The minimum number of days before the intended move that an application for a superload oversize permit must be submitted.
5 days
Superload approval processing time (Measures)
The minimum and maximum number of business days required to process a superload permit application after submission.
3 to 14 days
Prior to processing
Project justification required (Yes or no)
Whether a project justification document demonstrating the necessity of the move is required for a superload permit application.
Yesin 2 cases
- In general
- Applications with a width of 6 metres or more and/or a gross weight more than 120,000 kg
Application submission fax number (In words)
The fax number to which superload permit applications and all related information must be sent.
In general
905-704-2545
Until January 1, 2026
905-704-2545
Application submission email address (In words)
The email address to which superload permit applications and all related information must be sent.
oo.permits@ontario.ca
Where these facts come from
- Guide to oversize/overweight vehicles and loads(opens in a new tab)
www.ontario.ca, web page, 7 facts
- Get an oversize/overweight permit(opens in a new tab)
www.ontario.ca, web page, 2 facts