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Is Chicagoland’s premier utility contractor and a Minority Business Enterprise that holds certifications with the City of Chicago and the State of Illinois. Since our incorporation in April 2005, Sonoma Underground has grown to cover all aspects of utility construction. From river crossings and trenching within the crowded streets of Chicago to open field trenching and boring, Sonoma Underground has the skills to get your job done right

Recent Projects

O'Hare International Airport

SUSI completed all infrastructure builds on the new South Air Traffic Control Tower @ O'Hare International Airport...

Metra's 31st street substation

Sonoma UG completed the installation of all UG facilities for Metra’s 31st street substation, working within the constraints of the overhead powerlines. Metra maintained normal operations during all construction activities...

Ohare International airport

SUSI Directional bored for the placement of Underground facilities in preparation of upcoming airline hanger renovation @ Ohare International airport...

UPRR High speed Rail project

UPRR High speed Rail, completed a 1200’ Rock Bore under the Kankakee River. SUSI completed this bore for 1/3 of the cost and faster than a rival contractor who completed same bore for a different Utility at same location

Kirkwood Meadows Public Utility Company

This project included the construction of 115kV and 34.5kV transmission and distribution lines as well as the removal of an ...

NV Energy

Robinson Summit Substation was a new 525/345kV substation located approximately 18 miles northwest of Ely, Nevada. The ultimate ...

Bonneville Power Administration

Wilson is currently working on the Big Eddy – Knight transmission project for Bonneville Power Administration. This project ...

Entergy Services, Inc.

This extraordinary project consisted of the installation of a 230kV transmission line underneath the Mississippi River. To ...

Portland General Electric

Wilson crews battled continual rains, muddy site conditions, changes in design for the installation of new wetland structures, ...

Is Chicagoland’s premier utility contractor and a Minority Business Enterprise that holds certifications with the City of Chicago and the State of Illinois. Since our incorporation in April 2005, Sonoma Underground has grown to cover all aspects of utility construction. From river crossings and trenching within the crowded streets of Chicago to open field trenching and boring, Sonoma Underground has the skills to get your job done right. Complete turnkey services and individual project components are what Sonoma Underground offers for your OSP project needs. Our client base includes the private sector, municipalities, the State of Illinois, Military Affairs, utility companies as well as government contracts.

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Sonoma Underground Services

103 Ford Drive,New Lenox, IL 60451.(815) 320-3222

Info@sonoma-underground.com