Southern Infrastructure Group (SIG) is a heavy civil contractor based in Dallas, Texas, specializing in the construction, rehabilitation, repair, and demolition of diverse and complex heavy civil construction projects. With a legacy rooted in Quest Civil Constructors, Inc., SIG brings together a team of experienced professionals who have collaborated for over two decades, leveraging their expertise gained at Quest to pursue projects such as dams, water and wastewater rehabilitation, flood control channels, treatment plants, demolition, environmental initiatives, transportation improvements, and right of way enhancements.
Headquartered in Dallas, SIG Civil is committed to delivering high-quality results in the field of heavy civil construction. Their portfolio includes notable projects like the replacement of the Anaquitas Aqueduct, CAVSARP Booster Station Expansion, Cedar Creek Dam Embankment Modifications, Elm Fork Water Treatment Plan Residuals Basin Site, Signal Butte Water Treatment Plant Construction, and TCWSP Treatment Plant Improvements. With a focus on complex projects, SIG Civil is dedicated to meeting the diverse needs of their clients and contributing to the development of robust infrastructure.
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