Motor Grader Transport: Trailer Selection, Permits & Shipping Checklist

Motor Grader Dimensions and Weight Ranges

Motor graders are classified by horsepower and blade width. Here are typical transport dimensions for common models:

Class	Example Models	Operating Weight	Transport Width	Transport Length
Small (100–150 HP)	Cat 120, Deere 620	22,000–28,000 lbs	8.0–8.5 ft	26–28 ft
Mid-Size (150–200 HP)	Cat 140, Deere 672	28,000–38,000 lbs	8.5–9.5 ft	28–32 ft
Large (200–300 HP)	Cat 160, Komatsu GD825	38,000–55,000 lbs	9.5–11 ft	32–36 ft
Mining Grade (300+ HP)	Cat 24, Komatsu GD1000	90,000–140,000 lbs	12–16 ft	40–50 ft

Note: Transport width includes the blade in its narrowest position. Many graders cannot retract the blade to under 8.5 ft, making oversize permits mandatory regardless of machine weight.

Trailer Selection

RGN (Removable Gooseneck) — Preferred for Most Graders

The RGN is the preferred trailer for motor graders because the detachable front gooseneck allows the grader to drive directly onto the deck under its own power. This eliminates the need for ramps or cranes at the pickup site and provides better control during loading. The RGN's low deck height (18–24 inches) also helps keep the overall transport height within permit thresholds for most mid-size graders.

Lowboy

A standard lowboy is a good alternative when an RGN isn't available. The low deck height provides similar height clearance benefits. The main difference is loading method—lowboys require ramps or a crane to load the grader, which adds time and may require additional equipment at the pickup site.

Step Deck

Step decks are suitable for smaller graders (under 28,000 lbs) that can be loaded via ramps. The higher deck height compared to a lowboy means the overall transport height may be closer to permit thresholds, so confirm the grader's height before booking a step deck.

Permit Requirements

Because most motor graders exceed 8.5 ft in width, oversize permits are required in every state on the route. Additional permit triggers:

• Width over 8.5 ft: Oversize permit required (virtually all graders)
• Width over 12 ft: Front escort required in most states
• Width over 14 ft: Front and rear escorts required; travel restricted to daylight hours in most states
• GVW over 80,000 lbs: Overweight permit required (large and mining-class graders)
• Length over 75 ft (tractor + trailer + load): Additional length permits may be required

Permit costs for a mid-size grader on a 3-state route typically range from $300 to $800 in total permit fees, not including escort vehicle costs.

Shipping Cost Factors

Motor grader transport typically costs $3,000 to $10,000+ depending on:

• Distance: Per-mile rates for heavy haul range from $1.75 to $5.25/mile
• Width: Graders over 12 ft wide require escorts, adding $150–$350/day per escort vehicle
• Inoperable surcharge: If the grader cannot self-load, crane or forklift costs are added
• Seasonal demand: Spring and summer construction season drives rates up 15–25%
• Fuel surcharges: Heavy haul trucks consume 40–50% more fuel than standard freight

Pre-Shipping Checklist

• Measure the blade width in its narrowest transport position
• Confirm the grader can move under its own power (or notify carrier of inoperable status)
• Check fluid levels and look for hydraulic leaks
• Photograph the machine from all angles before loading
• Confirm site access at pickup and delivery for a 70+ ft transport rig
• Remove or secure any loose attachments (scarifier, blade extensions)

Get a Motor Grader Shipping Quote

IronHaul Logistics ships motor graders of all sizes across the continental US. We handle all state permits, coordinate escorts for wide loads, and select the right trailer for your machine. Call (208) 495-2260, email [email protected], or fill out our online quote form with your grader's make, model, and blade width for a fast, accurate rate.