Sonoma Underground Services Incorporated

Herlihy Mid-Continent Company, based in Romeoville, Illinois, has established itself as a prominent leader in heavy highway and foundation construction across the Midwest with nearly 100 years of experience. Renowned for excellence and safety in concrete construction, the company specializes in diverse projects including bridges, tollways, pumping stations, soil retention, piling systems, and retaining walls. Employing a collaborative project delivery process that starts during the design and bidding phase, Herlihy ensures potential construction issues are addressed early, resulting in timely and cost-effective project completions. The company's commitment to a people-first approach underpins its operations, emphasizing safety, quality, and strong relationships within the construction industry. Generated from the website

Located in Chicago, Ill., Walsh Construction Company is a general contracting, construction management and design-build firm. The firm operates using Union Labor and Union Subcontractors. Incorporated in 1949, it has experience with a wide variety of building, civil and transportation sectors. The firm undertakes construction projects/services for commercial buildings, bridges, airports, highways, pump stations, entertainment centers, federal buildings and many others. Walsh Construction Company is a part of The Walsh Group family of companies. The firm is one of the top 20 contractors in United States according to Engineering News-Record.