IDOT
​Prequalified

ERA is prequalified with the Illinois Department of Transportation (IDOT) In the following categories:
​​• Special Studies - Traffic Signals
• Highways - Roads and Streets
• Special Services - Surveying
• Special Studies - Feasibility
• Location Design Studies – Rehabilitation
• Location Design Studies - Reconstruction/Major Rehabilitation
• Special Services - Construction Inspection
• Structures - Highway: Simple
• Structures - Highway: Typical
• Hydraulic Reports - Waterways: Complex
• Special Studies - Location Drainage
• Hydraulic Reports - Pump Stations
• Hydraulic Reports - Waterways: Typical
• Environmental Reports - Environmental Assessment
• Environmental Reports - Environmental Impact Statement
• Highways - Freeways