Dunigan Bros


(517) 787-4720


911 E. South Street, Jackson, MI 49203


Building Your Clean Water Infrastructure

Dunigan Bros., Inc. leads the industry in the construction of large-scale complex underground projects throughout the Midwest. Our experience handling the most complicated underground projects ensures that we can always meet our clients’ needs. You can trust us to deliver the utilities you count on regardless of depth, ground condition, material, or the size and complexity of your project.  

We have completed single projects consisting of constructing miles of water mains, sewer force mains, gravity sewers, and streets. We can provide: 

Water Transmission and Distribution Systems

Our team is skilled in building large and small diameter systems for water transmission and distribution. We have completed miles of water transmission mains as well as local systems that required not only mainline piping but also hundreds of home services on single projects. We can provide:

  • Small and Large diameter distribution and transmission piping, valves, and appurtenances.
  • Water service installation
  • Lead service replacements

Street Reconstruction

Apart from completing the underground work, rebuilding the surface is often part of our job.  We ensure that our skilled professionals have the knowledge and experience to complete the reconstruction of roadways and streetscapes in a manner that restores neighborhoods, streets, and other properties to their original and, ideally, improved conditions.

Specialty Underground

  • Specialty Sheeting and Ground Retention
  • Specialty Pipe Support (Such As Special Bedding and Piling Support)
  • Dewatering
  • Specialty pipe products such as FRP, Pre-Stressed Concrete Cylinder Pipe, and Spiral wound steel.

Gravity Sewer Systems

We have extensive experience completing construction of gravity sanitary and storm sewer systems including:

  • Small and Large Diameter piping from 4” to 120”
  • Depths From Zero to in Excess of 40 Feet deep
  • Building complete new Sanitary and Storm Sewer Systems
  • Storm sewer management systems such as underground storage and Aqua-swirls
  • Above ground and over water trestle mounted piping

Combined Sewer Separation

  • Conversion of Existing Combined Systems Into Storm or Sanitary Sewer
  • Construction of Diversion, Overflow Structures, and Screening Structures (Including Precast and Poured in Place)
  • Sewer Discharge Structures (Such As Headwalls and Overflow Structures)
  • Installation of Custom Fabricated Weirs, Screens, and Gates

Site Work and Development

Our team can complete all types of site work and development. We handle projects involving residential and commercial development, industrial facilities, factories, and warehouses. Services include:

  • Site Piping
  • Foundation Excavation
  • Mass Earthmoving
  • Road and Driveway Construction
  • Parking Lot Construction
  • Specialty Foundation Support
  • Pit Construction

Pressure Sewer Systems

We provide the construction of the following:

  • Force Mains
  • Grinder Stations
  • Low-Pressure Systems


We can build systems using any pipe product, such as:

  • Fiber-Reinforced Polymer (FRP)
  • Steel , Solid and Spiral Wound
  • Ductile Iron
  • PVC
  • Concrete
  • PCCP

Water and Wastewater Pumping and Control Systems

Our crew has completed construction of all types of water and wastewater pumping and control systems, including:

  • Lift Stations
  • Booster Stations
  • Flow Control/ Overflow Structures
  • Pressure Reduction Stations


We aim to help create a better project for both the owner and the contractor, resulting in a more efficient and economical job. Our professional office staff can provide the guidance you need at all stages of your project, from planning all the way to completion. You can count on us to assist you with the following:

  • Site Layout
  • Pipeline Routing
  • Material Selection
  • Design/Constructability Review