| Tier 2 Draft Environmental Assessment | PDF (10.5 MB) |
| Tier 2 Final Environmental Assessment | PDF (25 MB) |
| Appendix A - Section 4(f) Documentation | PDF (7.6 MB) |
| Appendix B - Responses to Comments from Federal Agencies on Tier 2 Draft EA | PDF (2.9 MB) |
| Appendix C - Responses to State Agency and State Elected Official Comments on Tier 2 Draft EA | PDF (1.4 MB) |
| Appendix D - Responses to Local/Regional Agency Comments on Tier 2 Draft EA | PDF (11.1 MB) |
| Appendix E - Responses to Public Comments on Tier 2 Draft EA | PDF (130 KB) |
| Appendix F - Responses to Organization Comments on Tier 2 Draft EA | PDF (11.1 MB) |
| Appendix G - Responses to Comments on 1/5/16 Tier 2 Revised EA | PDF (7.4 MB) |
| Air Quality Analysis Technical Report (Full Document) | PDF (23.1 MB) |
| Air Quality Analysis Technical Report | PDF (4.6 MB) |
| Air Quality Analysis Technical Report: Appendices A to K | PDF (19.6 MB) |
| Alternatives Development Technical Report | PDF (7 MB) |
| Appendix A - Existing Interchange Assessment Matrices | PDF (361 KB) |
| Appendix B - Design Chronicles | PDF (302 KB) |
| Appendix C - Alternative Pros and Cons | PDF (28 MB) |
| Appendix D - NEPA Public Hearing Boards | PDF (84 MB) |
| Appendix E - Public Information Boards | PDF (83 MB) |
| Appendix F - RFP Conceptual Plans June 2016 | PDF (49 MB) |
| Architectural Survey Management Summary | PDF (6.3 MB) |
| Battlefields Management Summary | PDF (7.9 MB) |
| Existing Conditions Technical Report | PDF (29 MB) |
| Appendix A - Existing Interchange Assessment Matrices | PDF (901 KB) |
| Appendix B - Ramp Movement Metrics | PDF (243 KB) |
| Appendix C - Volume Balancing Metrics | PDF (18 MB) |
| Appendix D - VISSIM Calibration Assumptions Memorandum | PDF (2.1 MB) |
| Appendix E - Intersection Approach Delay and LOS | PDF (902 KB) |
| Appendix F - Safety Analysis Qualitative Results | PDF (162 MB) |
| Appendix G - Safety Analysis Quantitative Results | PDF (15 MB) |
| Hazardous Materials Technical Memorandum | PDF (7.2 MB) |
| Indirect and Cumulative Effects Technical Memorandum | PDF (1.1 MB) |
| Interchange Justification Report - Full Document | PDF (9 MB) |
| Appendix A - Letters of Support | PDF (479 KB) |
| Appendix B - Conceptual Plans | PDF (81 MB) |
| Appendix C - Traffic Models | PDF (98 MB) |
| Appendix D - Traffic Analysis Methods, Assumptions and Calibration Memorandums | PDF (3 MB) |
| Appendix E - Preliminary Signing Plans | PDF (60 MB) |
| Appendix F - MWCOG Congestion Survey Results and Aerials | PDF (90 MB) |
| Appendix G - Environmental Assessment | PDF (192 KB) |
| Interchange Justification Report - Exhibits | PDF (15 MB) |
| Natural Resources Technical Report | PDF (1.6 MB) |
| Natural Resources Technical Report: Attachment A Waters of the U.S. Technical Report | PDF (35.3 MB) |
| Preliminary Noise Analysis | PDF (<1 MB) |
| Preliminary Noise Analysis: Figure 1 | PDF (<1 MB) |
| Preliminary Noise Analysis: Figure 2 | PDF (20.4 MB) |
| Preliminary Noise Analysis: Appendices A to K | PDF (8.1 MB) |
| Operations Concept Technical Report | PDF (3.7 MB) |
| Socioeconomics and Land Use Technical Memorandum | PDF (<1 MB) |
| Transit and Transportation Demand Management (TDM) Technical Report | PDF (21.2 MB) |
| Appendix A - Transit & Park-and-Ride Demand Forecasting Methodology Memorandum | PDF (1.47 MB) |
| Appendix B - Bus Bay, Maintenance, and Storage Capacity Analysis Technical Memorandum | PDF (1.17 MB) |
| Appendix C - Preferred Alternative Transit Service Individual Route Maps | PDF (21.9 MB) |
| Appendix D - Existing Transit/TDM Provider Overviews | PDF (3.11 MB) |
| Transportation Technical Report - Full Document | PDF (37 MB) |
| Appendix A - Volume Figures | PDF (11 MB) |
| Appendix B - Turning Movements | PDF (12.5 MB) |
| Appendix C - Local and Regional Transportation Plans | PDF (317 KB) |
| Appendix D - Travel Demand Model & Post Processing Methodology & Assumptions Technical Memorandum | PDF (229 KB |
| Appendix E - Travel Demand Forecasting Model Validation Memorandum | PDF (1.5 MB) |
| Appendix F - Safety Analysis Qualitative Results (Figures 1-5) | PDF (54 MB) |
| Appendix F - Safety Analysis Qualitative Results (Figures 6-8) | PDF (47 MB) |
| Appendix F - Safety Analysis Qualitative Results (Figures 9-11) | PDF (40 MB) |
| Appendix F - Safety Analysis Qualitative Results (Figures 12-14) | PDF (49 MB) |
| Appendix G - Safety Analysis Quantitative Results (Figures 1-4) | PDF (67 MB) |
| Appendix G - Safety Analysis Quantitative Results (Figures 5-8) | PDF (90 MB) |
| Appendix H - VISSIM Calibration Assumptions, Methodology, and Results Memorandum | PDF (2.3 MB) |
| Appendix I - Arterial Traffic Operations Results | PDF (2.6 MB) |
| Appendix J - Freeway Traffic Operations Results | PDF (2.4 MB) |
| Appendix K - 2040 No-Build Scenario from Draft Transportation Technical Report, May 12, 2015 | PDF (8.8 MB) |
| Appendix L - Alternative 2A and 2B Analysis from Draft Transportation Technical Report, May 12, 2015 | PDF (22 MB) |
| Appendix M - Supplemental Analysis Memos | PDF (4.3 MB) |
| Appendix N - Memorandum on I-66 People Moved and Mode Share | PDF (1.2 MB) |
| Transportation Technical Report - Exhibits | PDF (74 MB) |
