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Tri-Valley Transportation Council │ 2020 Nexus Fee Update Study August 2021 │ Final 19 3 IMPROVEMENT PROJECTS AND COST ESTIMATES This chapter presents the 38 improvement projects included as part of the 2020 Nexus Updates. 3.1 IMPROVEMENT PROJECTS There are 38 improvement projects that the TVTC has included in the Tri-Valley Transportation Development Fee (TVTDF) for the 2020 Nexus Study. Of those projects, 15 projects exist in the current TVTDF and 23 that are to be considered as part of this nexus update study. 3.1.1 CURRENT PROJECT LIST Current projects are divided into two lists. The first list, List A, includes 7 projects that were included in the original program adopted in 1995. The second list, List B, includes 8 projects that were included in the 2008 Nexus Study. Out of the 27 existing projects, 10 projects have been completed and are no longer considered for further funding. In addition, two projects (B-9 Danville Boulevard/Stone Valley Road I-680 Intersection and B-11a I-680 HOV Direct Access Ramps) have been removed from the project list and are no longer being considered for funding (for a total of 12 projects removed from the prior lists). The remaining projects have not been fully completed. Table 13 summaries the projects in List A and B along with their total project costs and their remaining unfunded cost. Detailed description of projects in Lists A and B are provided in Appendix A. 3.1.2 NEW SELECTED PROJECT LIST With almost half of the current project list completed and no longer receiving funding, TVTC reviewed and selected additional projects to be considered for receiving funding from the TVTDF. This selection process involved a comprehensive planning process to develop a project list that mitigates the impacts of new development based on feasibility and stakeholder support. From this process, 23 additional projects (List C) were identified to receive funding from the TVTDF. List C projects, along with their total project costs and their remaining unfunded costs are listed in Table 14. Detailed descriptions of projects in List C are provided in Appendix B. 3.2 UNFUNDED COST Tables 13 and 14 presents total project cost and their remaining unfunded cost. The total investment for projects eligible to receive TVTDF funding is estimated to be $4.470 billion, where $3.677 billion is unfunded. An additional reduction was applied to account for external “cut-though” trips on roadway congestion projects. Future development within the Tri-Valley area is not responsible to pay for these trips since these trips are caused by growth outside of the Tri-Valley area. This reduces the total unfunded cost to be covered by the maximum TVTDF to $2.928 billion. Note that this does not change the overall project costs. The funded amount includes the current TVTDF amount currently allocated toward projects as well as additional federal, state, regional, or local funding sources. Based on input received from member