How to Ship a Motor Scraper: Complete Earthmoving Scraper Transport Guide
Motor scrapers are among the largest and heaviest pieces of earthmoving equipment in regular use — a Caterpillar 657G stretches 53 ft 1 in long, 14 ft 3 in wide, and 15 ft 6 in tall at an operating weight of nearly 148,000 lbs. That's a superload by any measure, requiring engineering review, multi-state permits, and specialized transport planning that goes well beyond a standard oversize move. Even smaller pull-type scrapers present significant transport challenges due to their width and the complexity of their hitch systems.
Motor Scraper Dimensions and Weight Ranges
Scrapers span a wide range of sizes, from small pull-type units to massive self-propelled motor scrapers. Key specs for common models:
| Model | Length | Width | Height | Operating Weight |
|---|---|---|---|---|
| Cat 657G (standard) | 53 ft 1 in | 14 ft 3 in | 15 ft 6 in | ~147,959 lbs |
| Cat 657G (push-pull) | 53 ft 1 in | 14 ft 3 in | 15 ft 6 in | ~160,505 lbs |
| Cat 657E | 53 ft 1 in | 14 ft 3 in | 15 ft 5 in | ~152,290 lbs |
| Cat 657B | 51 ft 8 in | 14 ft 2 in | 13 ft 10 in | ~139,100 lbs |
| Pull-type (small) | ~20–30 ft | ~8–10 ft | ~8–10 ft | ~15,000–30,000 lbs |
Large motor scrapers like the Cat 657 series are superloads in virtually every state — exceeding 80,000 lbs GVW, 14 ft in width, and 13.5 ft in height simultaneously. This triggers the most complex tier of permit requirements.
Superload Classification and Permit Requirements
A superload is generally defined as a load exceeding 150,000 lbs GVW, 16 ft in width, or 16 ft in height — though some states set lower thresholds. The Cat 657G at 148,000 lbs operating weight (plus trailer tare weight of 40,000+ lbs) easily qualifies as a superload in most states. Superload requirements typically include:
- Engineering review: Route must be analyzed by a licensed engineer to verify bridge capacity and road structure can support the load.
- Extended permit lead time: 5–10 business days minimum; some states require 2–3 weeks for complex superloads.
- Law enforcement escort: Most states require a state police or sheriff escort for superloads, in addition to pilot cars.
- Travel restrictions: Superloads are typically restricted to daylight hours, Monday–Friday, and may be prohibited on holidays and weekends.
- Utility coordination: Overhead utility lines may need to be temporarily raised or rerouted along the transport path.
Trailer Requirements for Motor Scraper Transport
The extreme length and weight of large motor scrapers require specialized trailer configurations:
- Multi-axle lowboy or RGN: Standard 2-axle lowboys (rated to 40,000–80,000 lbs) are insufficient for a 148,000 lb scraper. Multi-axle configurations (4–8 axles) are required to distribute the weight within per-axle legal limits.
- Stretch RGN: The 53 ft length of a Cat 657 requires a stretch RGN or extendable lowboy. Standard 48 ft trailers cannot accommodate the full machine length.
- Disassembly: In some cases, the scraper bowl or push-block must be removed to reduce width or height for transport. This adds loading/unloading time and cost.
Loading Considerations
Loading a large motor scraper requires careful planning:
- The machine must be driven onto the trailer under its own power — crane loading is not practical for a 148,000 lb machine.
- The scraper bowl should be lowered to its transport position to reduce height.
- Tie-down points are typically at the front axle frame and rear push-block frame. Use Grade 70 or Grade 80 chains rated for the load weight.
- Verify that the loading site has adequate space for the 53 ft machine to maneuver onto the trailer.
Cost Factors for Motor Scraper Transport
Superload moves are significantly more expensive than standard oversize moves. Cost drivers include: engineering review fees ($500–$2,000+), multi-state permit fees ($300–$600 per state for superloads), law enforcement escort fees ($500–$1,500 per day), pilot car fees ($200–$400 per car per day), and specialized multi-axle trailer rental. Total permit and escort costs for a multi-state superload move can easily reach $5,000–$15,000 before carrier rates.
Need to ship a motor scraper? IronHaul Logistics has experience coordinating superload moves for large earthmoving equipment. Call (208) 495-2260, email [email protected], or request a free quote online with your machine's make, model, and dimensions.
Common questions
Is a Cat 657 motor scraper a superload?
Yes. A Cat 657G weighs approximately 148,000 lbs operating weight, which plus trailer tare weight exceeds 150,000 lbs GVW in most configurations. It also measures 14 ft 3 in wide and 15 ft 6 in tall — exceeding superload thresholds in most states.
What permits are required to ship a large motor scraper?
Large motor scrapers require superload permits in every state traversed. This includes engineering route review, law enforcement escort, pilot cars, and extended permit lead times of 5–10+ business days. Each state has its own superload permit process.
What trailer is needed to ship a Cat 657 scraper?
A multi-axle stretch RGN or extendable lowboy is required. The Cat 657 is 53 ft long and weighs 148,000+ lbs, requiring a trailer with 4–8 axles to distribute weight within per-axle legal limits and sufficient deck length to accommodate the machine.
Does a motor scraper need to be disassembled for transport?
Sometimes. If the scraper's width or height exceeds state-specific superload thresholds, the scraper bowl or push-block may need to be removed. This adds loading/unloading time and cost but may be necessary to comply with permit requirements.
How long does it take to arrange permits for a motor scraper move?
Superload permits typically require 5–10 business days minimum. Complex multi-state moves with engineering review may take 2–3 weeks. IronHaul begins the permit process as soon as machine dimensions and the route are confirmed.
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