Final business case submission

In November 2020 the Government approved our Full Business Case and announced the final approval of £98m towards the cost of funding the Third River Crossing.

Available case documents can be downloaded below. Any missing documents will be added shortly and can be provided on request if needed.

• GY3RC Full Business Case (PDF, 8 MB)
• Appendix A - 3D Visualisations of the Scheme (PDF, 948 KB)
• Appendix B - Detailed Project Programme (PDF, 217 KB)
• Appendix C - Appraisal Summary Table and WebTAG Worksheets (Excel doc, 6 MB)
• Appendix D - Detailed Cost Breakdown (PDF, 89 KB)
• Appendix E - Risk Register and QRA (PDF, 657 KB)
• Appendix F - Public Accounts (PA) Table (Excel doc, 22 KB)
• Appendix G - Transport Economic Efficiency (TEE) Table (Excel doc, 26 KB)
• Appendix H - AMCB Table (Excel doc, 20 KB)
• Appendix I - S151 Officer Declaration (PDF, 119 KB)
• Appendix J - Communication Strategy 2020 (PDF, 185 KB)
• Appendix K - DfT Check Sheet (PDF, 174 KB)
• Appendix L - DfT Clarification Questions (PDF, 207 KB)

Clarification documents

• Clarification document 1 - Links with Speed Flow Curves (PDF, 3 MB)
• Clarification document 2 - Calibration and Validation Sites (PDF, 3 MB)
• Clarification document 3 - Signal Data (PDF, 49 KB)
• Clarification document 5 - HGV SLA on Breydon Bridge (PDF, 533 KB)
• Clarification document 5 - RSI Blending Factors (PDF, 59 KB)
• Clarification document 6 - Prior Matrix SLA at RSI Sites (PDF, 889 KB)
• Clarification document 8 - Prior Matrix SCL Validation (PDF, 73 KB)
• Clarification document 9 - Link Calibration and Validation (PDF, 13 MB)
• Clarification document 9 - Turning Count Validation (PDF, 282 KB)
• Clarification document 11 - Base Year Flow Plots (PDF, 2 MB)
• Clarification document 14 - VDM Area of Influence (PDF, 1 MB)
• Clarification document 17 - Uncertainty Log (PDF, 535 KB)
• Clarification document 20 - Matrix Totals (PDF, 59 KB)
• Clarification document 21 - Journey Time Data (PDF, 830 KB)
• Clarification document 21 - Junction VC Plots (PDF, 1 MB)
• Clarification document 21 - Select Link Analysis (PDF, 6 MB)

Supporting documents

• Supporting document 1 - Economic Appraisal Report (PDF, 1 MB)
• Supporting document 2 - Active Mode Appraisal Report (PDF, 7 MB)
• Supporting document 3 - Social and Distributional Impact Report (PDF, 7 MB)
• Supporting document 4 - Wider Impact Benefits Technical Note (PDF, 998 KB)
• Supporting document 5 - TUBA Methodology Technical Note (PDF, 1 MB)
• Supporting document 6 - Scheme Costs Technical Note (PDF, 5 MB)
• Supporting document 7 - Variable Demand Model Report (PDF, 1 MB)
• Supporting document 8 - Monitoring and Evaluation Plan (PDF, 2 MB)
• Supporting document 9 - Benefits Realisation Plan (PDF, 959 KB)
• Supporting document 10 - Additional Modelling Information (PDF, 332 KB)