Thinking Outside the Box: A Guide to Over-Dimensional Shipping with RCT Logistics
In the world of logistics, not all cargo fits neatly into a standard container. For large-scale projects, industrial moves, or unique pieces of equipment, you need a different kind of expertise. This is where over-dimensional (OD) shipping comes in, and at RCT Logistics, we specialize in making the complex simple.

What Makes a Shipment “Over-Dimensional”?
An over-dimensional, or oversize, shipment is any freight that exceeds the standard legal size and weight limits for road travel. While these limits can vary by state, a load is generally considered OD if it’s:
- Wider than 8.5 feet
- Taller than 13.5 to 14.5 feet (depending on the state)
- Longer than 48 to 53 feet
- Heavier than 80,000 pounds (Gross Vehicle Weight)
The U.S. Department of Transportation also has maximum guidelines to consider when shipping. Common examples of OD cargo include heavy machinery, construction equipment, boats, and large vehicles.
The Essential Elements of Over-Dimensional Shipping
Transporting these giants is a detailed process that requires more than just a truck. Here’s what you need to know about over-dimensional shipping:
- Specialized Equipment: Standard flatbed trailers might not cut it. Over-dimensional shipments often require specialized equipment, such as:
- Extendable Flatbeds: For extra-long loads.
- Double Drop or Removable Gooseneck (RGN) Trailers: Ideal for loads that exceed height restrictions and to make loading and unloading heavy machinery easier.
- Multi-Axle Trailers: Used to evenly distribute weight and comply with axle load limits.
- Permits, Regulations, and Route Planning: This is the most critical part of the process. Every state has its own unique regulations for OD shipments. Transporting your cargo across state lines means obtaining permits for each state you pass through. This isn’t just a simple form; it involves detailed route planning to avoid bridges with weight or height restrictions, narrow roads, and other potential obstacles. For larger loads, this planning can take weeks.
- Escort Vehicles: To ensure safety and alert other drivers, many over-dimensional loads require having escort vehicles, or “pilot cars,” accompanying them. These vehicles, equipped with warning signs and lights, travel ahead of or behind the truck to help navigate the route, clear the way, and ensure the load can pass safely. The number of escorts required depends on the size of the load and the regulations of each state.
How to Secure the Best Rate for Your Over-Dimensional Shipment
Getting a quote for an OD shipment is not a “one-size-fits-all” scenario. The final price is a combination of many factors. When calling RCT, here’s how to ensure you get the most accurate and cost-effective rate for your over-dimensional freight:
- Provide Complete and Accurate Information: The more information you can provide upfront, the better. Be prepared to provide the exact dimensions (length, width, height), weight, and specific details of your cargo. Knowing the precise pick-up and delivery addresses is also crucial for accurate route planning and permit acquisition.
- Be Flexible with Pick-Up and Delivery Times: Strict appointment times can make it more challenging to find a driver and can increase costs. If you can offer a flexible window for pick-up and delivery, carriers have more room to work your shipment into their schedule, which can lead to better rates.
- Choose an Experienced Logistics Partner: This is, without a doubt, the most important factor. The complexities of OD shipping require a knowledgeable partner who understands the intricate details of permits, regulations, and carrier networks. An experienced logistics company like RCT Logistics can:
- Source the right specialized equipment for your cargo.
- Efficiently manage the permit acquisition process across multiple states.
- Coordinate pilot cars and other safety measures.
- Leverage their network to find the best carrier for your specific lane and needs.
Attempting to manage an over-dimensional shipment on your own can lead to costly delays, fines, and potential safety risks. By working with a professional, you can ensure a smooth, compliant, and cost-effective transport from start to finish.
At RCT Logistics, we are dedicated to providing seamless solutions for all your shipping needs, no matter the size. Contact us today at rates@rctlogistics.com or 330-441-7310 for a personalized quote and let us handle the heavy lifting.