Triumphal Arch Assessment of Effect (Revised) - August 28, 2026

The Assessment of Effects documents the NPSs evaluation of the proposed undertakings potential to affect historic properties within the Area of Potential Effects, which has been informed significantly by feedback previously received from consulting parties. The assessment identifies the properties significance, evaluates effects upon them, and provides the NPSs findings regarding effects to identified historic properties. The NPS has found this undertaking will have an adverse effect on one or more historic properties. This finding is documented in the Assessment of Effects.

Document Content:

Triumphal Arch - Section 106 Assessment of Effect (FINAL)   (3.3 MB, PDF file) Appendix B - June 5 - June 15 - Public Comment summary report   (280.2 KB, PDF file) Appendix C - July 10 - July 30 - Public Comment summary Addendum   (177.4 KB, PDF file) Appendix F - 2026-08-19 DC Triumphal Arch - Architectural Plans   (37.7 MB, PDF file) Appendix G - Triumphal Arch - Transportation   (18.4 MB, PDF file) Appendix H - Triumphal Arch - Landscape Renderings   (99.9 MB, PDF file) Appendix I - Triumphal Arch - Revised APE Maps 6of6   (8.4 MB, PDF file) Disclaimer: Links within the above document(s) were valid as of the date published. Note: Some of the files may be in PDF format and can be viewed using the Adobe Acrobat Reader software. You may download a free copy of from Adobe Systems.