Tunnel Boring Machine Excavation

The South Englewood Flood Reduction Project is progressing with the use of advanced tunneling technology. The project aims to mitigate flood risks in the area while minimizing disruptions to residents.

Englewood Public Works is working with American Civil Constructors (ACC) and subcontractor Northstar to employ a Tunnel Boring Machine (TBM) designed to excavate underground to accommodate the new pipe. The tunneling will cover approximately 1,600 feet between the new detention pond and Rotolo Park. The tunnel is constructed using the two pass method, which involves installing sections of the tunnel in 4-5' increments as the TBM makes its first pass through the future tunnel location, followed by pipe sections on its second pass therefore creating the completed tunnel.

Utilizing the TBM was chosen over traditional open cut excavation methods due to the depth of the project and will reduce the impact to residents along Standford Ave.

Stay tuned for continued updates as the South Englewood Flood Reduction Project continues construction throughout 2024.