Building Strong Relationships
Building Strong Communities
Building Strong Futures

At Simon

We do more than build roads—we create opportunities and lasting connections. Grounded in grit and driven by purpose, our projects start with raw materials and turn into real infrastructure that strengthens communities. From asphalt and concrete paving to bridges and utility work, we deliver quality that stands the test of time. Whether you’re looking for a team where hard work leads to opportunity or a trusted partner for your next project, we’re ready to get to work. With integrity, quality, and expertise, we build what moves the West forward.

services

Asphalt Paving

With over 70 years of experience, Simon is a leader in asphalt paving across the region. We’ve paved hundreds of thousands of miles of highways, roads, parking lots, and runways—delivering smooth, durable surfaces that stand the test of time. From major infrastructure projects to local developments, we bring expertise, high-quality materials, and precision craftsmanship to every job.
Bridge Construction

Bridges are more than just structures—they are essential connections that keep communities and commerce moving. At Simon, we specialize in building and rehabilitating bridges with a focus on durability, safety, and innovation. Whether spanning highways, waterways, or railways, our team delivers high-quality bridge construction that meets the highest engineering and safety standards.
Concrete Construction

From foundations to roadways, concrete is the backbone of modern infrastructure. Simon provides expert concrete construction services for roads, bridges, sidewalks, parking lots, and industrial applications. Our skilled crews and advanced techniques ensure long-lasting, high-performance concrete structures built to withstand time and heavy use.
Utility Construction

Reliable infrastructure starts beneath the surface. Simon specializes in underground utility construction, including water, sewer, storm drainage, and electrical conduit installations. We work closely with municipalities, developers, and contractors to ensure seamless integration with surrounding roadways and infrastructure, delivering safe, efficient, and long-lasting utility solutions.

materials

Aggregate

Simon provides high-quality aggregates for projects of all sizes, from residential driveways to large-scale highway construction. With mining operations across four states, we supply a variety of materials, including granite and limestone from our quarries, sand and gravel from our pits, and specialized aggregates from our pump and dredge operations. Whether you need base course, riprap, or custom-spec aggregates, we have the expertise and resources to meet your project’s needs.
Asphalt

Simon is your trusted supplier for high-quality asphalt, whether for a driveway, parking lot, or major interstate highway. With decades of experience and a commitment to superior materials, we produce durable, long-lasting asphalt mixes designed to withstand heavy traffic and extreme weather conditions. Our advanced production facilities and expert teams ensure you get the right mix for your project, delivered on time and built to last.
Emulsion

Simon produces and delivers a full range of anionic and cationic emulsions for paving, sealing, and road maintenance. Manufactured at our Rapid City production facility, our emulsions are designed for superior adhesion, durability, and performance. With the capacity to handle projects of any size, we provide the right emulsion solutions to extend the life of your roads and infrastructure.
Ready Mix Concrete

At Simon, we offer a wide range of ready-mix concrete designs to meet the specific needs of your project. Whether for residential, commercial, or infrastructure applications, our concrete mixes are engineered for strength, durability, and performance. With reliable delivery and expert quality control, we provide the high-quality concrete and service you deserve to keep your project on schedule.
Precast Concrete

Simon’s precast concrete solutions offer durability, efficiency, and precision for a wide variety of construction projects. Manufactured under controlled conditions, our precast products ensure consistent quality and faster installation times compared to traditional on-site concrete work. Whether for structural components, utility applications, or custom designs, we deliver reliable precast solutions tailored to your needs.