To strive to be the highest quality producer in the public works construction industry and provide service that exceeds our customer’s expectations.


Capitol Underground, Inc. is a public works contractor, founded in 1976. The company’s work emphasis includes water and sewer installations for residential subdivisions, commercial business parks, sewage district interceptor sewers and municipal public works reconstruction projects. Capitol Underground, Inc. has a long standing history of successfully completing projects for developers and municipalities in the Madison metropolitan area and surrounding communities. We are proud of the strong reputation we have established with our customers and we constantly strive to provide competitive pricing, high quality workmanship and on time delivery.


Since its inception, the key to our success has been our personnel. The ownership has always believed that maintaining an experienced and dedicated workforce results in a company that is proud of its accomplishments and is poised to overcome any challenges presented in the future. From top to bottom, our employees are committed to executing our work in an efficient, organized manner and maintaining a level of excellence second to none.


Capitol Underground is focused on fostering and maintaining excellent relationships with each and every customer. We take the time to listen to our customer’s expectations on every project, allowing us to become familiar with the anticipated goals for each project and providing a road map to a successful completion. Our ability to secure and perform work for existing customers on a negotiated basis is an example of our dedication to customer satisfaction. It is our goal to remain a leader in public works construction services throughout southern Wisconsin.

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