Transporting heavy equipment in Quebec requires the right match between the trailer, the load and the regulatory constraints of the provincial road network. A 20-tonne excavator loaded on an undersized trailer, a wheel loader whose height exceeds the limits without the required permit, or a machine poorly secured on a flatbed unsuited to its configuration: these mistakes have consequences for the safety of other road users, for the contractor's civil liability, and in the fines and delays that follow. Conversely, an operator who knows the characteristics of each type of trailer, allowable load capacities and Quebec's oversize transport permit requirements can plan mobilizations efficiently and avoid surprises on moving day.
This guide reviews the main types of trailers used to transport heavy equipment in Quebec, explains how they work, their capacities and their regulatory constraints, and provides practical benchmarks to guide buying or rental decisions based on the equipment to be transported.
The standard lowbed or equipment trailer: the basic trailer
The lowbed, also called an equipment trailer or low-deck trailer, is the most widely used heavy equipment trailer in Quebec. Its lowered deck, with a loading height generally between 700 and 900 mm off the ground, makes it possible to transport tall equipment while staying under the overall height limits set by Quebec's Highway Safety Code. The deck is made of ribbed steel or reinforced wood decking, and retractable or removable loading ramps let tracked and wheeled equipment drive on and off under its own power.
A standard lowbed's load capacity varies with its configuration and number of axles: a two-axle lowbed generally carries 35 to 50 tonnes of payload, while three- or four-axle configurations can exceed 60 tonnes depending on load distribution. The lowbed is suited to transporting the following equipment in common Quebec configurations:
- Crawler excavators of every class up to 40 tonnes
- Light to intermediate wheel loaders
- Mini excavators and skid steers transported together
- Standard-class dozers and motor graders
- Rollers and light to intermediate paving equipment
- Compact mobile crushers and light-class screeners
Choosing the right lowbed for a given machine depends on checking three parameters at the same time: the trailer's rated load capacity relative to the equipment's weight, the deck length relative to the equipment's overall length, and the overall height of the load once the equipment is positioned on the deck.
The gooseneck trailer: for tall equipment
A gooseneck trailer differs from a standard lowbed with its articulated neck that curves downward, lowering the loading deck further, sometimes to as little as 400 mm off the ground on the lowest models. This configuration makes it possible to transport equipment taller than a standard lowbed allows, while keeping the overall load height under Quebec's regulatory limits. The gooseneck can be fixed or detachable depending on the model: a detachable gooseneck (RGN) lets equipment be loaded from the front of the trailer by setting the neck on the ground, making it easier to load machines that cannot climb rear ramps because of their configuration or low ground clearance.
The gooseneck trailer is preferred in the following situations on Quebec jobsites:
- Transporting large-class excavators whose cab height exceeds the limits of a standard lowbed
- High-capacity wheel loaders whose bucket or auxiliary equipment increases overall height
- Drilling and specialty foundation equipment whose masts or booms are difficult to lower
- Lifting equipment such as light to intermediate mobile cranes
- Transporting bulky prefabricated structures over short distances with special permits
Handling a detachable gooseneck requires a precise loading and unloading procedure to avoid imbalances when the neck is separated from and reconnected to the deck. The operator must master this procedure before using the trailer on the road, because a poorly executed reconnection can compromise the safety of the tractor-trailer combination in motion.
The multi-axle lowboy: for exceptional loads
The multi-axle lowboy is the transport solution for equipment whose weight and dimensions exceed what standard configurations can handle. These trailers are made up of one or more deck modules assembled to the required length, with a variable number of steering and load-bearing axles depending on the load and the regulations in force along the route. Spreading the load over a large number of axles reduces the load per axle transmitted to the pavement, which is one of the most important criteria for obtaining an oversize transport permit in Quebec during the spring thaw, when allowable loads on the road network are reduced.
Transporting with a multi-axle lowboy requires rigorous logistics planning in several steps:
- Obtaining the oversize transport permit from the ministère des Transports et de la Mobilité durable with the exact dimensions and weight of the load
- Checking the route approved by the ministry to identify bridges, overpasses and intersections whose allowable loads or clearances restrict passage
- Coordinating with municipal authorities for the local road sections included in the route
- Arranging the safety escorts required based on the convoy's dimensions
- Scheduling travel times according to the time restrictions imposed by the permit
The flatbed trailer: versatility for non-self-propelled loads
A flatbed trailer is a deck at standard loading height, with no drop or gooseneck, used to transport non-self-propelled loads such as equipment parts, steel structures, precast beams, large-diameter pipe and containers. Its versatility and easy loading make it one of the most widely used trailers in Quebec's construction and transport industry. Flatbeds are available in standard configurations for tractor hookups, or as hydraulic dump configurations for applications that require tip unloading.
Its use for transporting self-propelled heavy equipment is limited by its higher loading height compared with a lowbed, which reduces the height available for the loaded equipment. It is, however, suitable for transporting small equipment such as vibratory plates, small concrete equipment, jobsite generators and auxiliary equipment whose height poses no regulatory issue. Loads commonly carried on flatbeds in Quebec's heavy equipment industry include:
- Replacement parts for heavy equipment: excavator arms, buckets, blades
- Large-diameter steel and concrete pipe for underground infrastructure
- Steel structures for bridges and industrial buildings
- Medium to large jobsite generators and compressors
- Jobsite containers and temporary office modules
Comparison table of trailer types
The following table summarizes the main characteristics of each type of trailer based on the criteria most relevant to heavy equipment transport in Quebec. It helps guide the choice quickly according to the equipment to be transported.
| Trailer type | Typical capacity | Loading height | Main application |
|---|---|---|---|
| Standard 2-axle lowbed | 35 to 50 t | 700 to 900 mm | Excavators, loaders, common equipment |
| 3- to 4-axle lowbed | 50 to 65 t | 700 to 900 mm | Large-class heavy equipment |
| Detachable gooseneck | 40 to 70 t | 400 to 600 mm | Tall equipment, light cranes |
| Multi-axle lowboy | 70 t and up | 350 to 500 mm | Exceptional loads, oversize transport |
| Standard flatbed | 20 to 40 t | 1,100 to 1,400 mm | Parts, structures, non-self-propelled equipment |
| Dump trailer | 20 to 35 t | Variable | Bulk materials, aggregate, spoil |
Quebec regulations on oversize transport
Heavy equipment transport in Quebec is governed by the Highway Safety Code and the trucking regulations in force, which set weight, length, width and height limits beyond which an oversize transport permit is required. The general limits on Quebec's road network are 2.6 metres in width, 4.15 metres in height and axle loads prescribed according to the road's classification. Any load exceeding one of these limits requires a permit application to the ministère des Transports et de la Mobilité durable before departure.
The spring thaw period, generally from March to May depending on the region, imposes additional load restrictions on the municipal network and some provincial roads to protect the pavement while the ground loses bearing capacity. These restrictions directly affect heavy equipment transport planning in the spring and must be built into jobsite mobilization schedules. Obligations to respect for any heavy equipment transport on Quebec's network include:
- Checking the dimensions and total weight of the load before determining whether a permit is required
- Obtaining the oversize transport permit with the approved route before any oversize move
- Respecting seasonal load restrictions during thaw periods
- Arranging the safety escorts required by the convoy's dimensions and the permit conditions
- Checking clearance limits on bridges and overpasses along the approved route
Securing heavy equipment on the trailer
Securing heavy equipment on a trailer is regulated by Quebec's Highway Safety Code and North American cargo securement standards. Poorly secured equipment can shift during transport under emergency braking or in a tight turn, creating a risk of the trailer rolling over or the load falling onto the road. Responsibility for securement is shared by the carrier and the shipper, and a poorly secured load can lead to administrative penalties and civil liability in the event of an accident.
Securement practices to follow when transporting heavy equipment on a trailer are:
- Positioning the equipment centred lengthwise and crosswise on the deck to balance the load across the axles
- Using a number of tie-down straps or chains appropriate to the equipment's weight under applicable standards, with an aggregate working load limit at least equal to the weight of the load
- Locking the equipment's controls and lowering all moving parts such as arms, buckets and blades before departure
- Checking the condition of the anchor points on the trailer before each use: hooks, rings and rails must be intact and free of corrosion
- Checking strap and chain tension after the first 50 kilometres of the trip, since road vibration gradually loosens securement systems during the first few kilometres
Trailer maintenance and regular inspection points
A heavy equipment trailer is subjected to extreme mechanical stress with every loading and unloading, particularly on the ramps, where tracked equipment exerts significant torsional and bending forces on the deck. The deck, the reinforcing ribs under the deck, the tie-down anchor points and the loading ramp hinges are the most critical wear and structural fatigue zones to inspect regularly. Publiquip brings together listings for trailers in every configuration posted by professional sellers in the industry across Quebec, making it possible to assess the specifications available against the company's transport needs.
Inspection points to check regularly on a heavy equipment trailer include:
- Deck: deformation, weld cracks, perforating corrosion in areas exposed to water
- Longitudinal ribs and cross members under the deck: fatigue cracks at junctions, repair welds
- Loading ramps: hinges, hydraulic cylinders if equipped, condition of non-slip surfaces
- Air brake system: hose tightness, condition of brake chambers and drums
- Axles and wheel bearings: radial play, hub seal leaks, tire wear
- Lighting and signalling: compliance of the wiring harness, condition of clearance and marker lights
Conclusion: choose the trailer the way you choose the equipment
Choosing a heavy equipment trailer follows the same logic as choosing the equipment itself: matching the machine's capabilities to the concrete requirements of the company's operations. A contractor who mainly transports intermediate-class excavators to regional jobsites needs a sturdy, well-maintained lowbed that is easy to certify on Quebec's network. An oversize transport specialist who moves large industrial equipment must master multi-axle configurations and special permit regulations. In both cases, the quality of the securement, the vehicle's compliance and rigorous maintenance are the factors that determine the reliability and safety of every move.
For professionals looking for a used trailer suited to heavy equipment transport in Quebec, visit Publiquip to browse listings for lowbeds, goosenecks and flatbeds posted by specialized industry sellers across the province. Publiquip has been Quebec's go-to platform for new and used heavy equipment since 1984, with more than 50,000 unique monthly visitors to its website.
Frequently asked questions about heavy equipment trailers in Quebec
What type of trailer is needed to transport a 20-tonne crawler excavator in Quebec?
A 20-tonne crawler excavator is transported on a standard two- or three-axle lowbed whose rated load capacity exceeds the equipment's weight with a sufficient safety margin, after checking that the overall height of the load does not exceed the regulatory 4.15 metres along the planned route. If the excavator's cab height combined with the lowbed deck height exceeds this limit, a gooseneck trailer that lowers the deck further must be used, with or without an oversize transport permit depending on the final dimensions of the load.
Is an oversize transport permit always required for equipment wider than 2.6 metres in Quebec?
Any load wider than 2.6 metres on Quebec's road network requires an oversize transport permit application to the ministère des Transports et de la Mobilité durable, with safety escort requirements that vary with the total width of the convoy and the type of road used. The time and route restrictions imposed by the permit must be respected, failing which the carrier faces administrative penalties and civil liability if an incident results from non-compliance with the permit conditions.
How do you calculate the axle load of heavy equipment on a trailer to check regulatory compliance?
Axle load is calculated by dividing the total weight of the load by the number of trailer axles, after accounting for the longitudinal distribution of the load based on the equipment's position on the deck and the tractor's weight on its own front axle. A load distribution calculator or an in-motion weigh scale check before departure is the most reliable way to confirm compliance, particularly for loads close to regulatory limits or during spring thaw restrictions.
What are the risks of using an undersized trailer to transport heavy equipment?
A trailer whose rated load capacity is lower than the weight of the equipment being transported is exposed to gradual deck deformation, fatigue of the reinforcing ribs and axle failure under an excessive load that exceeds their rating. Beyond the structural risks, exceeding the trailer's rated load engages the carrier's civil liability in the event of an accident and can lead to the trailer's certificate of compliance being withdrawn during a roadside inspection.
Does the spring thaw affect every type of road in Quebec in the same way?
Load restrictions during the spring thaw vary with the road classification: municipal roads and local roads are generally subject to the strictest restrictions, because their pavement structure is thinner and less reinforced than that of provincial roads and highways. Contractors planning heavy equipment mobilizations in the spring must check the restrictions that apply to every section of the planned route, including local access roads to jobsites, since fines for exceeding permitted loads during the thaw are significant and liability for pavement damage may be incurred.