Harbour Island Force Main Replacement Design-Build Project | Project Updates
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Project Updates

Harbour Island Force Main Replacement Design-Build Project

2021 4th Quarter Update

(October – December 2021)

  • Completed Secant Piling for Microtunnel launch and receiving shafts.
  • Completed excavation of Microtunnel launch shaft.
  • Installed section of Forcemain piping from Morgan St into Cotanchobee Park.
  • Preparation for installation of Microtunnel boring machine at launch shaft.
  • Completed two 605 Ft. Microtunnels under Port Tampa Bay entrance, including installation of carrier piping.
  • Completed Forcemain and Reclaim piping through Port Tampa Bay, up to entrance.

2022 1st Quarter updates

  • Completed excavation, micropiling, and tremie slab for the microtunnel receiving shaft.
  • Completed micropiling and tremie slab for the microtunnel launch shaft.
  • Completed receiving and staging of launch shaft equipment for the microtunnels.
  • Awaiting delivery of microtunnel boring machine.
  • Completed force main and reclaim connections for the dual microtunnels at the port entrance.
  • Completed over 1100ft of pipe for force main and reclaim systems from the port entrance to Oceanview Place.
  • Completed and tested reclaim system.
  • Completed pressure testing for over 8400ft of force main.

2022 2nd Quarter Update

(April – June 2022)

  • Installed safety barriers and handrails around both Launch & Receiving Shafts
  • Performing grout injections @ Launch shaft
  • Form and pour levelling slab @ Launch Shaft
  • Form & pour runway for tunnel launch @ Launch Shaft
  • Form & pour thrust wall and entry seal headwall @ Launch Shaft
  • Install slurry, bentonite, dewatering and vent lines @ Launch shaft
  • Installed safety access ladder in Launch Shaft
  • Setup jacking frame & miscellaneous equipment @ Launch Shaft
  • Continue MT casing procurement
  • Expanded laydown yard @ Launch Shaft
  • Performed mock retrieval with local Tampa Fire & Rescue @ Launch Shaft
  • Received & initiated setup of slurry separation plant
  • Received bentonite mixing / lubrication plant
  • Cleanup shaft internal periphery at Receiving Shaft
  • Final inspection of Receiving Shaft
  • Completed 803 Lft Forcemain system from west side of Oceanview Jack & Bore to King Rd
  • Installed additional monitoring wells and compiling additional geotech data @ Oceanview jack & bore
  • Awaiting re-issue of jack & bore permit at Oceanview RR crossing
  • Restoration of Forcemain & Reclaim System construction easement and surrounding areas of Glover property

2022 3rd Quarter Updates

(July-September 2022)

  • Launch shaft construction completed, made ready for tunneling equipment install
  • Launch shaft thrust block and entry seal cured and ready for next phase
  • Survey / navigation controls transferred into launch shaft
  • Bentonite lube station setup and tested
  • MTBM control cabin and navigation guidance modules, setup / testing completed
  • Mobilized 160 Ton RT and setup MTBM head section
  • Installation of entry seal completed; ready to proceed with mining operation
  • Completed pre-mining test runs of MTBM modules
  • MTBM five (5) modules / train setup completed in shaft
  • Begin microtunneling and casing installation
  • Prep worksite for / and restored after Hurricane Ian
  • Receiving shaft final inspection findings – remedial work addressed
  • Continuation of Oceanview Jack & Bore permit re-issue
  • Reclaim water main faulty BF Valve replacement – Began final system pressure test

2022 4th Quarter Updates

(October-December 2022)

  • All leaks in receiving shaft fixed
  • Receiving shaft construction complete
  • Installed ventilation system, dewatering system, and access ladder system in the receiving shaft
  • Receiving shaft exit seal modification in progress for MTBM recovery
  • MTBM has progressed over halfway across the Ybor Turning Basin with 111 (20ft) Tri-Loc casing pipe joints being installed through 4th quarter
  • 5 Intermediate Jacking Stations have been installed out of 6 planned IJS on tunnel drive
  • Regular tunnel surveys are performed frequently to confirm accurate advancement of the tunnel
  • MTBM advancement rates range from less than 1 foot to almost ten feet per hour and have averaged about 25ft per working day thus far
  • Received over 80% of total steel casing for MT installation
  • Over 160ft Jack and Bore completed at the end of Oceanview Pl
  • Appx 370ft of 54” pipe laid down the length of Oceanview Pl

2023 1st Quarter Updates

(January-April 2023)

  • All construction work on shafts has been completed including installation of exit seal within receiving shaft in preparation for MTBM recovery
  • All materials required for construction of microtunnel are on-site
  • Regular tunnel surveys conducted show the tunnel has been mined to within approximately 2 inches of target line and grade for the entire tunnel alignment
  • Microtunnel has been constructed a total distance of 3005ft totaling 150 total pipe joints including 5 intermediate jacking stations
  • MTBM breaks through exit seal in receiving shaft 4/21/23