Quigg Engineering, Inc.

Quigg Engineering, Inc. is a business consultant in East Peoria, IL, specializing in engineering and consulting services for public and private sector clients. Since 2006, the firm has provided expertise in highway and bridge design, land surveying, environmental studies and permitting, traffic engineering, construction inspection, and site development. With over 80 professionals across the Midwest and Florida, Quigg Engineering serves clients with a focus on quality, timeliness, and integrity. The company is a Woman-Owned Disadvantaged Business Enterprise (DBE) and has earned recognition through multiple ACEC-IL awards, including Engineering Excellence, Merit, Honor, and Special Achievement Awards, as well as being named IDOT Engineering Firm of the Year in 2021, 2018, and 2011.

The firm emphasizes a progressive and client-aligned approach to planning, engineering, and surveying, relying on a diverse team of over 100 employees, including 40+ licensed professionals across six states. Its services span construction inspection, environmental studies, transportation planning, site development, and aviation, with a strong commitment to safety, compliance, and regulatory adherence. Inspectors undergo OSHA training, and the environmental team includes certified scientists experienced in wetland delineations and coordination with US Army Corps of Engineers districts. The company’s projects have included major infrastructure improvements such as the I-255 Road & Bridge Rehabilitation, the I-55 at Weber Road Diverging Diamond, and the University of Chicago Botany Pond Restoration.

Located at 235 Meadow Ave in East Peoria, the firm operates within a community setting with no specific nearby landmarks listed. Quigg Engineering is known for its consistent recognition in the engineering field, reflecting a reputation for excellence, innovation, and reliable project delivery across Illinois and beyond. As a trusted partner in infrastructure development, the company continues to support the growth and resilience of the region’s transportation and public works systems.