Following the completion of the Major Investment Study (MIS) and the selection of a Preferred Investment Strategy, the Downtown East Valley Project moved into the Conceptual Engineering phase for the Santa Clara/Alum Rock Corridor, Capitol Expressway Light Rail and Monterey Highway Bus Rapid Transit projects.
During Conceptual Engineering (CE, 10% design level) the project definition is further refined. This involves additional study of the following project elements:
- Project alignment options and details
- Station locations, including design elements and configuration
- Demand for Park-and-Ride lots along the corridor
- Operating and transit service plan, including interface between bus and other rail services
- Existing and future traffic conditions, including recommendations for grade separations and other modifications to the existing roadway network
- Existing and future transit ridership
- Right-of-way needs
- Transportation System Management (TSM) alternative
- Project implementation and phasing plan and
- Refined cost estimates.
Preliminary Engineering
During Preliminary Engineering (PE, 35% design level), the plans developed for Conceptual Engineering are further advanced through the following tasks:
- Update engineering and system operation plans
- Refine urban design features and plans
- Evaluate cost efficiencies
- Refine cost estimates
- Prepare utility and right-of-way plans
- Prepare for the final design of the project.
Public involvement is a key element throughout the Conceptual and Preliminary Engineering phases.
Final Design and Construction
Final design moves the project to the 100% engineering design level. Decisions will be made on design refinements, engineering issues, landscaping, as well as the type of building materials. A community outreach program for construction will be developed during the final design phase.
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