Interwest Construction, Inc.

ConstructionWashington, United States51-200 Employees

Interwest Construction, Inc. is a privately owned heavy civil construction contractor based in Burlington, Washington, that has operated in the state since 1987. The company undertakes a broad range of large-scale construction projects, including heavy highway and airport work, underground utilities, drainage systems, site development, bridges, and environmental and fish passage projects, as well as demolition and mass earthwork. Its work emphasizes collaboration among field teams and specialized disciplines such as safety, surveying, and environmental stewardship to ensure projects meet timelines, budgets, and regulatory specifications.

Serving public and private sector clients across Washington, Interwest positions itself as a comprehensive provider of heavy civil infrastructure solutions, offering both construction services and related activities like aggregate sales and recycled materials. The firm’s capabilities reflect a focus on creating and maintaining transportation networks and infrastructure, with an emphasis on site preparation, utilities, and environmental considerations throughout project delivery. A recent development noted in local coverage includes asset acquisitions and contractual work related to municipal projects, indicating ongoing activity within its core markets.

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