Mainline Contracting

Mainline Contracting, Inc. has been a trusted name in heavy utility construction in the Rapid City and Black Hills area since 2000. We specialize in completing projects of all sizes, from $5,000 to $8 million, for local municipalities, government agencies, and private developers. Our team of experienced professionals boasts over 200 years of combined expertise, ensuring that every project is completed safely, efficiently, and to the highest standards.

Our Services

We offer a comprehensive range of services, including:

Water & Sewer

• Water main installation and repair
• Sewer line installation and repair
• Hydrovac excavation and potholing
• Water meter installation and repair

Storm Sewer

• Storm drain installation and repair
• Catch basin installation and cleaning
• Gutters and downspouts installation and repair

Asphalt Millings & Crushed Concrete

• Asphalt patching and paving
• Crusher run production and sales
• Street and parking lot repair and maintenance

Trucking

• Hauling of various materials, including dirt, gravel, asphalt, and concrete

Boring & Site Work

• Utility installation and relocation
• Trenching and excavation
• Site grading and drainage installation

Safety & Environmental Responsibility

At Mainline Contracting, we prioritize safety and environmental responsibility in all our projects. We adhere to all applicable regulations and use the most modern equipment and materials to minimize environmental impact. Our commitment to safety extends to our employees, subcontractors, and the communities we work in.

Experienced & Reliable Team

Our team comprises skilled professionals with deep experience in all aspects of heavy utility construction. We prioritize clear communication, collaboration, and attention to detail to ensure successful project completion and client satisfaction. We stand behind our work and guarantee on-time completion and high-quality workmanship.