About Us

Infrastructure Engineering, Inc. (IEI) is one of the leading consulting engineering firms in the Midwest since 1986. Serving public and private organizations in Illinois and Indiana, IEI focuses on the delivery of high quality design engineering, program management, and construction engineering and inspection services.

The firm was acquired by its current President, Michael Sutton, P.E., in 1997. Under his leadership and management, IEI has diversified its portfolio of expertise to include airport, harbor, highway/roadway, mass transit, site development, structural, traffic, and water management services.