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A Leader in heavy utility construction

Mainline Contracting is capable of installing all types and sizes of storm sewer pipe.  We also provide trenchless storm sewer pipe installations including auger boring and hydraulic tunneling. Other storm sewer services include constructing storm water detention ponds, storm water structures, culvert cleaning and erosion control.

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Jet Cleaning

Ability to clean out existing storm and sanitary sewer piping.

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Storm Sewer Construction

With an array of trench shoring, excavators, and attachments we can excavate in excess of 25 feet, excavate thru rock formation, dewater excavations, and install pipes of all materials and sizes.

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RCP Pipe Jacking

Install reinforced concrete pipe by auger boring or hydraulic tunneling. Sizes range from 12” thru 72”.

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Culvert Cleaning

Clean existing culverts under roadways from small amounts of sediment to fully plugged. Deteriorated culverts can be relined or replaced with HDPE, PVC , or Concrete Pipes.

Mainline's crew that was assigned to our project were professional throughout the project and assured that the City's expectations were met and exceeded. In spite of numerous project challenges which included confined site conditions, groundwater/creek seepage, dep bore pits, large cobble to bore through and period of extreme cold weather, Mainline Contracting completed the project with quality workmanship, on time and on budget. 

Kyle Mathis, PE,

Last summer we had the experience of reconstruction on our street. Fortunately for the city, Mainline Construction and Complete Concrete made it as painless as possible. I hope the city continues to use these two fine companies often. 

Milton & Rhonda Wright,

Mainline Contracting made an outstanding effort to exceed compliance expectations for the installation of the drainage improvements, crossings and box culverts for the Back 9 holes at the Elkhorn Ridge Golf Course. The site compliance record at this time is outstanding and is clearly a result of good team effort. 

Mainline Contracting Inc did an excellent job working with the residents affected by the project and providing the resources required to overcome the harsh weather conditions. They kept a positive attitude and were able to meet the substantial completion date set for the project without sacrificing the quality or workmanship of the construction. 

Hiene Junge,

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