CDBG-MIT – Trenchless Installation of Utilities Across Fleming Channel

The project is located within Navy property at Trumbo Annex and involves relocating the City’s existing 30-inch influent wastewater pipeline and 8-inch water supply pipeline from their aerial crossings on Fleming Key Bridge to a new underground alignment beneath Fleming Key Cut. The crossing will consist of approximately 458 feet of 72-inch steel casing installed by microtunneling using a microtunnel boring machine (MTBM), launched and received from watertight shafts approximately 30 feet in diameter and 45 to 50 feet deep. The casing will accommodate the relocated 30-inch wastewater and 8-inch water pipelines, both constructed of fused C-900 pipe, as well as future 30-inch and 18-inch pipelines that will be installed and capped approximately 5 feet below finished grade. Additional work includes approximately 680 feet of open-cut installation of 30-inch wastewater and 8-inch water pipelines, utility tie-ins at both ends of the crossing, and construction of associated manholes and valve vaults. Site improvements will include grading, fencing, temporary road construction and removal, and restoration of all disturbed areas. MANDATORY A mandatory pre-bid meeting will be held in the City Manager’s Conference Room at City Hall, located at 1300 White Street, Key West, Florida 33040, on Wednesday, October 28, 2026, at 2:00 P.M. An optional site visit to Trumbo Point will follow. Attendees are responsible for obtaining the necessary authorization and meeting all access requirements to enter the base.