Interstate Assembly Systems in Marshfield, Wisconsin specializes in custom vehicle upfitting and aftermarket support for vocational trucks and commercial fleets. The location provides knuckleboom, drywall crane, dump truck, flatbed, rail truck, box truck, tree service and logging upfits, along with custom fabrication, paint, refurbishment, aftermarket parts and ongoing service to help customers keep their equipment ready to work™.

The Marshfield location provides custom upfitting for a wide range of vocational trucks, including flatbeds, dump trucks, mechanics trucks, box trucks, knuckleboom and drywall crane trucks, as well as vehicles used in the tree care, logging and rail industries. Whether you need a standard configuration or a fully customized build, Interstate Assembly Systems delivers solutions designed around your operational requirements.

Yes. Interstate Assembly Systems designs and builds custom vocational trucks for customers with unique operational needs. From forestry, agriculture and tree service vehicles to rail support and construction equipment, the Marshfield team works with customers to create durable, application-specific solutions that improve productivity and efficiency.

Yes. The Marshfield location provides refurbishment, custom fabrication, bodyshop, and professional paint services to extend the life of existing work trucks and equipment. Whether you’re refurbishing an older vehicle, modifying equipment for a new application or updating your fleet’s appearance, Interstate Assembly Systems delivers solutions tailored to your needs.

Yes. Interstate Assembly Systems offers aftermarket parts and service to help customers maintain, repair and upgrade their upfitted vehicles. The Marshfield team provides replacement components and ongoing support to help maximize equipment uptime and long-term performance.

The Marshfield location supports customers across mining, agriculture, construction, utilities, municipalities, and commercial fleets. Its custom vehicle upfitting solutions are designed to meet the specific demands of each industry while helping customers improve safety, productivity and equipment performance.