Custom Cargo Trailers for Sale at TrailersPlus

Our exclusive DuraFrame™ design means your Interstate cargo trailer is built to last. Interstate uses only the highest gauge American steel, and we don’t take shortcuts when it comes to construction. The tongue frame passes through the chassis and is welded to the main rails for superior strength.

Interstate trailers are built with American-Made Dexter Axles, the quality leader in the Industry for over 50 years. Our trailers are constructed with either heavy duty leaf spring axles or rubber-dampened torsion axles that provide independent wheel suspension and superior handling.

From our sturdy steel-framed door openings to the strength-reinforcing gussets on our corner posts, our I-beams are made from the same steel American skyscrapers are built with. Structurally fortified in all the right places, Interstate’s frame strength is unmatched.

We utilize a one-piece aluminum roof with Quadra-Sealed™ four-layer roof seams that keep moisture out, ensuring that your cargo stays dry. With an internal roof liner that prevents roof vibration and wear, as well as formed steel internal frames and welded ridge reinforcements, the roof of an Interstate trailer is as strong as the rest of the trailer.

Interstate’s doors and ramps feature heavy duty welded hinges. Most manufacturers use lower-grade bolts and straps that bend and sag over time. Interstate’s steel door frame can’t be bent. And with ramps rated from 2,500 to 4,000 pounds that are fortified with steel gussets and three-piece welded hinges, Interstate trailers can handle the heaviest cargo.

The steel chassis are protected by automotive-grade paint, and all-weather protective undercoating comes standard on all Interstate models. With ¾” thick exterior grade plywood from northwest grown Douglas Fir, our floors are solid, and the seams are completely sealed to keep moisture out.

The Interstate brand delivers quality and durability. That’s why we install diamond plate stone guards on all our Interstate cargo trailers, preventing rock chips and ensuring your trailer stays in showroom condition for the years to come. On top of that, diamond plate stone guards increase your trailer's curb appeal.

We utilize a hat-bow vertical stud design to give your trailer increased strength and the best resistance to flexion. As opposed to a tube beam design, a hat-bow stud design provides a larger contact surface area. More surface area contact gives you a sturdier trailer leading to a longer life and safer driving.

Interstate’s added gussets mean your cargo trailer is built to last. These reinforcements add exponential strength to your trailer, resisting flexion and providing a more durable design. We don’t take shortcuts when it comes to construction.

All Interstate trailers come equipped with radial tires. They provide a longer life and increased fuel mileage when compared to bias ply tires. Not only that, but radial tires are much less prone to blowouts. In line with Interstate’s legendary durability, we want our trailers to get you to and from the job with zero hassle and are willing to go the extra mile.

Every Interstate cargo trailer has ⅜” plywood interior walls to give years of reliable use. Connected to our hat-bow studs and ¾” plywood floor, this is a recipe for a strong and sturdy unit. Install e-track, tie downs, or build shelving. These heavy-duty walls will handle it with ease.

Not only do we provide quality and durability, but we give our trailers curb appeal, too! Why have a perfectly constructed trailer with exposed wiring? We conceal all our trailer’s wiring to make our trailers seamless from the outside in.

Don’t be caught on the side of the road without a spare tire! We provide a spare tire mount on the right side of the rear door that is easily accessible in any road emergency. We install our spare tire mounts off the floor to keep it from detracting from your precious cargo space.

ALL Interstate cargo trailers come with a roof and bumper-to-bumper warranty. Our Pro Series trailers have a lifetime roof warranty and a 3-year bumper-to-bumper warranty. We aim to ensure everyone driving an Interstate has a great driving experience. Check the product page for the specific warranty on the trailer you’re looking at.