Last Chance Grade Alternatives for Further Study
The 2015 Last Chance Grade Feasibility Study identified numerous potential alternatives. Several alternatives were excluded from further study because analysis indicated they would have much greater potential impacts without adding any unique value. The remaining alternatives were further analyzed and refined in the Project Study Report in 2016.
Caltrans has since conducted preliminary geotechnical and environmental studies, a Geotechnical Expert-Based Risk Assessment, and a Value Analysis Study, resulting in seven alternatives. A series of Alternatives Analysis Workshops, involving stakeholder participation, was completed in April 2021. Based on the results of the Workshops, two alternatives were selected for further study. By focusing efforts on these alternatives, Caltrans has been able to reduce the time and resources needed for overall evaluation and for development of the Environmental Impact Report/ Environmental Impact Statement (EIR/EIS).
Use the buttons above to select an alternative and learn more about each of them.
Each alternative is denoted with a letter, indicating one of the solid lines on the map.
On the maps, the red line indicates the current LCG alignment; dark pink segments outlined in yellow indicate the approximate position of tunnels.
Click here to see the alternatives that have been eliminated from further study.