Documents and studies

These documents are public resources and can be shared with individuals upon request by emailing 495northernextension@vdot.virginia.gov and requesting the file by name.

Please note the files have not all been converted to be “ADA Compliant.” You may request assistance with documents by contacting michelle.holland@vdot.virginia.gov or 495northernextension@vdot.virginia.gov. 

Noise reports
495 NEXT Final Noise Abatement Design Report Technical Memorandum for Noise Barrier C - October 2023
495 NEXT Final Noise Abatement Design Report Technical Memorandum for Noise Barriers 13D and 13E - June 2023
495 NEXT Final Noise Abatement Design Report - April 2023
495 NEXT Environmental Assessment: Preliminary Noise Study, Noise Technical Report - February 2020
495 NEXT Environmental Assessment: Preliminary Noise Technical Report Appendices - February 2020

 

Environmental studies and approvals
495 NEXT Federal Highway Administration Finding of No Significant Impact - June 2021
495 NEXT Federal Highway Administration Finding of No Significant Impact, Appendix A - June 2021
495 NEXT National Parks Service Section 4f Temporary Occupancy and De Minimis: Finding of No Signification Impact Determination Concurrence - May 2021
495 NEXT Fairfax County Park Authority Section 4f Temporary Occupancy and De Minimis: Finding of No Significant Impact Concurrence - May 2021
495 NEXT Revised Environmental Assessment - May 2021
495 NEXT Revised Environmental Assessment Errata 1: Revised Section 4f and Section 6f Technical Memorandum - May 2021
495 NEXT National Park Service Section 106 No Adverse Effect Concurrence - April 2020
495 NEXT Environmental Assessment - February 2020
495 NEXT Environmental Assessment: Air Quality Technical Report - February 2020
495 NEXT Environmental Assessment: Air Quality Technical Report Appendices - February 2020
495 NEXT Environmental Assessment: Alternatives Development Technical Memorandum - February 2020
495 NEXT Environmental Assessment: Hazardous Materials Technical Memorandum - February 2020
495 NEXT Environmental Assessment: Hazardous Materials Technical Memorandum Appendices - February 2020
495 NEXT Environmental Assessment: Indirect and Cumulative Effects Technical Report - February 2020
495 NEXT Environmental Assessment: Natural Resources Technical Report - February 2020
495 NEXT Environmental Assessment: Natural Resources Technical Report Appendices - February 2020
495 NEXT Environmental Assessment: Socioeconomic and Land Use Technical Report - February 2020
495 NEXT Environmental Assessment: Appendix A, Section 4f and 6f Technical Memorandum - February 2020
Visualizations for National Park Service and George Washington Memorial Parkway - February 2020
495 NEXT Cultural Resources Survey Technical Report - June 2019
495 NEXT Virginia Department of Environmental Quality Approval for Virginia Stormwater Management Program Regulations - January 2019

 

Traffic and technical reports
495 NEXT Traffic and Transportation Technical Report Errata #3 - January 3, 2022
495 NEXT Final Approved Interchange Justification Report Addendum with Signatures - December 2021
495 NEXT Final Interchange Justification Report Addendum Appendices - December 2021
495 NEXT Final Approved Interchange Justification Report with Signatures - June 2021
495 NEXT Final Approved Interchange Justification Report Appendices - June 2021
495 NEXT Traffic and Transportation Technical Report Errata #2 - June 1, 2020
495 NEXT Traffic and Transportation Technical Report Errata #1 - May 7, 2020
495 NEXT Traffic and Transportation Technical Report and Appendices - February 2020

 

Transportation Management Plan (TMP)
495 NEXT Final Approved Transportation Management Plan - April 2022

 

Commonwealth Transportation Board approval
495 NEXT Commonwealth Transportation Board HOT Lanes Designation - April 2021

 

I-495 American Legion Bridge transit/TDM plan
495 NEXT I-495 American Legion Bridge Transit and Transportation Demand Management Plan: Final Report - March 2021

 

495 NEXT revegetation plan
495 NEXT Revegetation Plan - June 2025
495 NEXT Revegetation Plan: Supplemental Exhibits of Seed Mixes and Plant Materials - April 2025
495 NEXT Corridor Revegetation Conceptual Plan - April 2024
495 NEXT April 2024 Project Update Meetings Boards: Revegetation Conceptual Plan - April 2024