Tunnels 

Photo: Gerwick
Gerwick has extensive experience with the design and construction of large floating concrete structures. This background has allowed us to develop innovative construction techniques and methods for casting, launching, and installation of immersed tube tunnel segments.
Photo: Gerwick

Ted Williams Tunnel - Boston

Gerwick’s scope of work on this project included design and specifications for a 50-foot-deep underwater trench in rock. The design for the trenc...
Photo: Gerwick

Maracaibo Túnel Puente Nigale: Dredging Design

Gerwick was responsible for delivering a specifications document that stated dredging...
Photo: Gerwick

Posey-Webster Street Tubes

Gerwick worked on the seismic retrofit design of two immersed tube tunnels in the San Francisco Bay area for the California DOT (Caltrans).
Photo: Gerwick

Busan-Geoje Immersed Tunnel

Gerwick performed the seismic design of the tunnel using Soil-Structure Interaction (SSI) analyses to evaluate seismic behavior. Modeling of grou...
Photo: Gerwick

Hong Kong-Zhuhai-Macao Link

Gerwick is working with COWI on the foundation design for this project, which includes the design of steel pipe piles and various ground improvem...

LAST UPDATED: 05.10.2012