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Expert Construction and Excavation Services in Duluth, MN
Superior Construction has been a trusted name in excavation and construction services for over 30 years. Founded by Duane Peterson, a seasoned professional with 45 years of industry experience, the company has grown to include a fleet of modern equipment and a team of skilled employees. Our expertise spans sewer and water repair, basement waterproofing, helical piers, excavation, and stormwater management, serving Northern Minnesota and Wisconsin. We prioritize minimizing project impact while delivering durable solutions, with a focus on customer satisfaction and long-term reliability. Our team includes Duane's sons, Eric and Evan Peterson, who bring over 20 years of hands-on experience in residential and commercial projects.From stream restoration to foundation repair, we combine technical precision with a commitment to community needs. Our family-owned business prides itself on addressing complex challenges like combined sewer separation and lead waterline replacement with innovative methods such as pipe bursting and PE pipe fusion. With offices in Duluth, MN, we offer free estimates and prioritize transparent communication throughout every project. Our dedication to quality is evident in our work on critical infrastructure, including courthouse sewer installations and zoo enclosure repairs. Through decades of service, we have built a reputation for reliability, technical excellence, and customer-centric solutions.
Services
Sewer Repair
Basement Waterproofing
Helical Piers
Excavation
Septic Installation
Stream Restoration
Landscaping
Driveway Preparation
Carpentry
Pipe Bursting
Highlights and features
- We offer 30+ years of specialized experience in excavation and sewer repair.
- Our family-owned team includes certified experts with generational industry knowledge.
- We provide 24/7 emergency services for urgent water and sewer issues.
- Our patented helical pier installation ensures durable foundation support.
- We guarantee minimal yard disruption during excavation projects.
Services
Sewer Repair
We specialize in sewer line repair and replacement using advanced techniques like pipe bursting and PE pipe fusion. Our team addresses aging clay tile and lead pipes, ensuring long-lasting solutions for residential and commercial properties. With same-day service for average 40-100 foot lines, we minimize yard disruption while maintaining compliance with Duluth plumbing codes.
Basement Waterproofing
Our basement waterproofing services include drain tile replacement, crack repair, and waterproof membrane installation. We use industry-leading materials to prevent water infiltration, combining core filling and helical support to stabilize walls. Projects typically complete within a week, with landscaping restoration to prevent future water pooling near foundations.
Helical Piers
Helical piers provide durable foundation support for decks, light poles, and buildings. Installed with minimal ground disturbance, these steel piers offer superior frost resistance and load-bearing capacity up to 40,000 lbs per pier. Ideal for soft soils and deep installations exceeding 30 feet, they provide a cost-effective alternative to concrete piers.
Excavation
We offer full-scale excavation services for residential and commercial projects, including site preparation, driveway installation, and shoreline repair. Our fleet includes excavators, bobcats, and dump trucks capable of handling projects from small backyard renovations to large-scale land development and demolition projects with recycling focus.
Stream Restoration
Our stream restoration projects focus on habitat improvement and flood mitigation. We collaborate with environmental agencies to rebuild channels, install fish passages, and implement erosion control measures like toe wood and rip rap. Recent projects include dam removals and post-flood recovery efforts along Sargent Creek and French River.
People
Duane Peterson
Owner
With 45 years of experience, Duane founded Superior Construction after starting as a roofing contractor. He expanded the business from a single backhoe to a full-service excavation company, specializing in sewer infrastructure and foundation solutions for the Northland region.
Eric Peterson
Supervisor
Eric has managed residential sewer and water projects for over 20 years. His expertise includes stream restoration, demolition, and site development, ensuring technical precision and customer satisfaction across diverse excavation and construction assignments.
Evan Peterson
Supervisor
Evan specializes in basement repair and concrete work, applying his 20+ years of experience to foundation stabilization projects. He contributes to all aspects of company operations while maintaining focus on waterproofing and structural integrity solutions.
Questions
What services do you offer?
We provide sewer and water repair, basement waterproofing, helical piers, excavation, stream restoration, and landscaping services in Northern Minnesota and Wisconsin.
How long will a sewer repair project take?
Most sewer or waterline replacements (40-100 feet) complete within a day using our efficient excavation and installation methods.
Do you handle emergency services?
Yes, we offer 24/7 emergency response for urgent sewer backups, waterline breaks, and foundation issues requiring immediate attention.
What areas do you serve?
We serve Duluth, Superior, Hermantown, Two Harbors, Silver Bay, Grand Marais, Cloquet, Virginia, Moose Lake, and surrounding areas in Northern Minnesota and Wisconsin.
How do you minimize yard damage during excavation?
We use precision trenching techniques and compact equipment to limit disruption, typically excavating only the width of the required trench for most projects.
Can you repair combined sewer lines?
Yes, we specialize in separating combined sewer systems for multiple properties while ensuring compliance with Duluth plumbing codes and standards.
