This 75 mile long commuter rail project will move people from the residential portions of Sonoma County to the inner Bay Area and work centers of San Francisco when completed. The rail line has been constructed along the historic Northern Pacific rail right-of-way in Sonoma and Marin counties. The project includes the construction of new train stations, as well as rail bed and bridges, to accommodate the complete rail system. Geosphere, in conjunction with its parent company CEL, is providing quality control and construction observation services for this project.
The Geotechnical challenges involved in the project were as follows:
- Soft Soils
- Existing Non-Engineered Fill
Geotechnical Services included the following:
- Foundation Construction Observation
- Earthwork Observation
- Testing Services
Client / Owner: Stacy Whitbeck/Herzog JV
Duration: 2011-present
Construction Cost: $50 million