Spring 2018

  • Notice to Proceed issued
  • Mobilize field office site at Barber Avenue
    • Clear site and install security fence

Summer 2018

  • Start outfall shaft excavation at Barber Avenue site

Fall 2018

  • Start excavation of shaft at Herndon Drive and Bank Street

Spring 2019

  • Tunnel Boring Machine (TBM) arrives
  • Assemble TBM
  • Begin tunnel excavation

2021

  • Concrete lining of tunnel

Spring 2023

  • Final connection
  • Drainage relief tunnel becomes operational