Description
The City of Chicago’s Department of Water Management is seeking qualified engineering firms to provide comprehensive final‑design services for the Far Southside Overflow Tunnel, a major deep‑rock tunnel system intended to augment the city’s storm‑water capacity. The scope includes detailed tunnel and shaft design, geotechnical investigations, hydraulic modeling, environmental impact assessments, permitting coordination, construction phasing, and associated deliverables such as a Basis‑of‑Design Report and full design drawings. This is a professional‑services contract requiring extensive civil‑engineering expertise, experience with large‑scale underground infrastructure, and familiarity with municipal water‑management regulations.
• Design of a ~9.7‑mile deep‑rock tunnel (≈ 20‑ft finished diameter) with multiple shafts and connections to existing infrastructure.
• Full geotechnical program, hydro‑hydraulic modeling, environmental impact studies, and permitting strategy.
• Production of complete design documentation (reports, drawings, construction phasing, risk and cost‑benefit analyses).
• Mandatory pre‑submission conference on 28 April 2026; questions due by 5 May 2026; final response due 31 July 2026.