Arlington County, Virginia, sued the Trump administration Thursday to stop construction of President Donald Trump's planned 250-foot triumphal arch near Arlington National Cemetery, alleging federal officials are moving toward building the monument without adequately examining its effects on public safety, traffic and historic landmarks.
The October 8, 2026, complaint, filed in federal court in Virginia, accuses the National Park Service of violating the National Environmental Policy Act by conducting an inadequate review of the project. The county is seeking an order preventing construction or demolition until the agency completes the environmental review required by law.
The complaint names the Department of the Interior, the National Park Service, Interior Secretary Doug Burgum and acting Park Service Director Jessica Bowron as defendants. Arlington County filed the case with assistance from the legal advocacy organization Democracy Forward.
The arch would stand at Memorial Circle, a traffic roundabout near the Virginia entrance to Arlington Memorial Bridge. The site is federally managed land within Washington, D.C., but borders Arlington County, whose officials say construction could affect local roads, emergency services and residents.
Trump has promoted the monument, known as the Independence Arch, as a tribute to the nation's 250th anniversary. At 250 feet, the proposed arch would tower over the Arc de Triomphe in Paris, which stands approximately 164 feet tall.
At the center of the county's lawsuit is the National Environmental Policy Act, or NEPA, which requires federal agencies to assess the potential environmental consequences of major projects before making certain decisions. Arlington argues that the Park Service gave insufficient consideration to the arch's size, location and effects on surrounding communities, including whether alternatives should be examined.
In comments submitted during the federal review process in July, Arlington officials warned that the monument could increase traffic around Memorial Circle, complicate pedestrian access and emergency response, and raise aviation safety concerns because of its proximity to Ronald Reagan Washington National Airport. The county urged federal officials to examine those potential effects before approving construction.
The dispute escalated on September 8, 2026, when the Arlington County Board authorized legal action after Burgum announced that excavation would begin within two weeks. At the time, county officials were still preparing additional comments requested by federal agencies.
Federal preservation documents acknowledge that the arch would adversely affect historic sites along the corridor connecting Arlington National Cemetery, Arlington House and the Lincoln Memorial. The Park Service maintains that Memorial Circle is essential to the design and has proposed measures to address the harm. Preservation groups have challenged the monument's impact on the historic views linking those landmarks.
Under the National Historic Preservation Act, federal agencies must consider how their projects affect historic properties. Officials ended consultations with local preservation organizations in September and moved toward completing the review through the Advisory Council on Historic Preservation.
The county's lawsuit follows an earlier challenge filed February 19, 2026, by three Vietnam War veterans and an architectural historian. That case focuses in part on whether the administration has congressional authority to build the monument.
In the earlier case, U.S. District Judge Tanya Chutkan ordered the administration to provide 48 hours' notice before undertaking site activity beyond permitted information gathering. Construction or demolition is subject to a separate 14-day notice requirement. The administration argues that a 1925 law authorizing work associated with Arlington Memorial Bridge provides authority for the monument, while the plaintiffs contend that congressional approval is required.
The administration is preparing to seek final approval from the National Capital Planning Commission at its November 5, 2026, meeting, with construction planned shortly afterward. Arlington County is seeking a court order preventing that work until the government completes the required environmental review.