Excavation, Trenching, and Site Utilities
Liberty Mechanical provides commercial excavation, underground utility installation, and site work in Lincoln, NE, and the surrounding area. We are a fully certified team with 24 years of hands-on field experience.
Commercial Site Utilities Done Right
Liberty Mechanical handles the underground work that makes commercial projects possible. From initial excavation through final utility installation and backfill, our team manages the below-grade scope that most contractors would prefer to avoid. With our Grade 6 certification, Master Wastewater credential, and 24 years of experience, we are qualified to tackle complex underground utility projects that demand both skill and accountability.

Our excavation and site utility services are exclusively for commercial applications. We work on commercial construction sites, municipal utility projects, and institutional developments throughout Lincoln, Nebraska. If your project involves underground infrastructure, we have the expertise to get it done correctly, on schedule, and within budget.
Excavation Services
- Domestic water service excavation and installation
- Fire service line excavation and installation
- Storm drain installation and connection
- Sanitary sewer excavation and installation
- Septic system installation for commercial applications
- Deep excavation for utility vaults and manholes
- Excavation for building slab, under-slab plumbing
- Utility locating coordination and safe dig compliance
- Site restoration and backfill compaction
Trenching and Site Work
- Precision trenching for water lines and service connections
- Storm drain trenching and pipe bedding
- Sanitary sewer trenching for new construction
- Utility trenching coordination across multiple trades
- Sleeving and boring for utility crossings
- Coordination with civil engineers and general contractors
- OSHA-compliant trenching and shoring practices
- Tie-in to existing municipal infrastructure
Underground Utility Systems We Install
Below-grade utility work is among the most consequential work on any commercial site. Errors in underground utility installation are expensive to fix and can affect the entire project schedule. Liberty Mechanical approaches every underground scope with the care and precision it deserves.
Sewer Systems
Commercial sanitary sewer installation, repair, and tie-in to municipal infrastructure. Installed to code with proper slope, cleanouts, and materials for long-term reliability.
Water Service Lines
Domestic water service installation from main tap to building entry, including meter settings, pressure reducers, and backflow prevention as required by code.
Fire Service Lines
Underground fire service installation for commercial sprinkler systems — sized and installed per NFPA requirements and coordinated with fire protection contractors.
Storm Drain Systems
Complete storm drain installation for parking lots, commercial sites, and building drainage — including catch basins, inlets, conveyance piping, and outlet structures.
Septic Systems
Commercial septic system installation for sites where municipal sewer service is not available — designed and installed in compliance with Nebraska Department of Environment and Energy requirements.
Site Work Coordination
Full coordination with civil engineers, general contractors, and other utility trades to ensure underground work is sequenced correctly and completed without conflict.
The Certifications Behind the Work
Underground utility work carries high stakes. Improperly installed water or sewer lines can contaminate groundwater, create costly building damage, or require complete re-excavation. The certifications Liberty Mechanical holds exist precisely because these risks are real — and they ensure that our work meets the highest professional and safety standards.
Grade 6 Certified
Master Wastewater Certified
Fully Licensed & Insured
Need a Commercial Excavation Project in Lincoln?
Contact Liberty Mechanical for a free, detailed quote on your commercial excavation or utility installation project.