The City of Columbus is soliciting bids for the Central College Subtrunk Phase 3, a major sanitary‑sewer micro‑tunneling project that will install approximately 10,926 ft of 48‑inch reinforced‑concrete pipe using curved and straight slurry micro‑tunneling, plus associated manholes, jacking and receiving pits, and open‑cut sewer connections. The work is funded via the Ohio EPA Water Pollution Control Loan Fund (WPCLF) and requires compliance with Davis‑Bacon prevailing‑wage rates, DBE participation goals, AIS/Build‑America‑Buy‑America provisions, and extensive environmental and safety plans. Bids must be submitted electronically through BidExpress by 18 Nov 2026, with a pre‑bid conference on 02 Nov 2026. The contractor must provide a 10 % bid bond, a 100 % performance bond, and adhere to a schedule that mandates substantial completion within 914 days and final completion within 975 days after the Notice to Proceed.
• Primary scope: 48‑in. micro‑tunnel sewer installation (~10,926 ft), 12 manholes, 4 jacking pits, 5 receiving pits, and open‑cut connections (18‑in., 12‑in., 8‑in.).
• Mandatory compliance: Davis‑Bacon Act, DBE 5.4 % goal, AIS requirements, WPCLF loan conditions, and extensive SWPPP and safety‑training certifications.
• Procurement details: Electronic bid submission via BidExpress, 10 % bid bond, 100 % performance bond, pre‑bid conference (optional), questions due 10 Nov 2026, bid deadline 18 Nov 2026.