Summary

This is a project specification and technical requirements document for the Grade Separated Service Roadway A3/A4 at Chicago O'Hare International Airport, prepared by the Illinois Department of Transportation and the City of Chicago. The project encompasses the design and construction of a grade-separated roadway system serving Terminals A3 and A4, including pavements, drainage systems, lighting, signage, utility relocations, site preparation, earthwork, structural elements, and traffic control measures. Proposals are due October 27, 2026, with work required to proceed concurrently with ongoing airport operations while maintaining coordination with multiple stakeholders. The contractor must demonstrate extensive experience with similar airport infrastructure projects and maintain rigorous quality control standards throughout project execution and completion.

Pricing for this project is established through competitive bidding, with cost proposals evaluated against technical qualifications and project schedules. The contract incorporates prevailing wage standards applicable to Illinois public works projects and requires performance bonds and comprehensive insurance coverage. Funding sources include federal grants and local airport revenues; the total project value and payment schedule are specified in the contract terms. Environmental compliance, safety protocols, and strict adherence to federal and state specifications are critical performance requirements. The contract term extends through project completion with potential extension provisions for warranty and maintenance obligations beyond the construction phase.