County Materials manufactures both traditional precast concrete manholes and Prima Base™ Monolithic Manholes for sanitary sewer and stormwater management systems. Engineered to provide dependable system access, inspection, and maintenance, traditional manholes deliver long-term durability and reliable performance in demanding underground applications. For projects requiring more complex configurations, Prima Base offers a state-of-the-art solution manufactured to exact project-specific dimensions. Advanced 3D design technology, optimized channel geometry, smooth interior surfaces, and single-pour construction help improve flow efficiency, reduce field labor, and enhance long-term durability. Together, these solutions provide the flexibility, performance, and quality to meet a wide range of infrastructure needs.
