IL 43 (Harlem Avenue), IL 43 from 47th Street to Sanitary and Ship Canal, and IL 43 at Sanitary and Ship Canal, Phase II Engineering Project, Cook County, Region One/District One

Phase II engineering services are required for the improvements of I-55 at IL 43 (Harlem Avenue) bridge structure and other improvements as listed below. The Consultant’s work is expected to consist of preparing contract plans, specifications, and estimates for the complete bridge replacement of the existing IL 43 bridge over I-55. The proposed bridge will be a 3-span structure with a minimum vertical clearance of 15’-4’’. The proposed bridge will have open abutments and precast prestressed concrete IL girders. As part of this bridge replacement, north approach slabs for the northbound and southbound CN RR bridges are proposed to be reconstructed and extended to the sleeper slab for I-55 bridge approach slab. This will effectively create a continuous bridge approach slab system between CN RR bridges and the new I-55 bridge. The Consultant’s work may include topographic survey, drainage design, roadway, bridge and underpass lighting, traffic signal modernization, geotechnical services as well as other roadway and structural tasks as determined by the department.