Judge Could Halt D.C. Arch Before Vote

President Trump’s administration is moving quickly to approve a 250-foot arch in Washington, D.C., but a federal judge could block construction before the final vote takes place. The National Capital Planning Commission is scheduled to consider final approval for the structure on Thursday, November 5, 2026. This decision is the central item on the commission's agenda.

The push for the arch has accelerated over the past several months. In May, the Commission for Fine Arts approved the initial design, which was incomplete at the time. In September, a federal council ended a historic preservation review that participants had described as rushed. The administration has bypassed Congress, relying instead on a century-old authorization for columns that were never built.

Legal challenges have intensified in the last week. Vietnam War veterans and an architectural historian sued in late October, arguing the project is unlawful without congressional approval. District Judge Tanya Chutkan consolidated this case with a new lawsuit filed by D.C. and Virginia over the weekend. The jurisdictions called the arch flagrantly illegal, citing traffic, environmental, and security concerns.

Chutkan ordered the government to notify the court within one hour of any decision by the planning commission or Department of the Interior. The government asked for 24 hours of notice, arguing that communicating decisions through its various chains takes time. The plaintiffs opposed the extension, comparing the situation to a previous case where the government cut down trees with less than a full day's warning. The judge kept the one-hour timeline but clarified her wording.

On Wednesday night, the government told the court that Grunley Construction Company may be arranging off-site preparations for construction mobilization. The administration previously stated that construction could begin as early as Thursday, pending approvals. The project would stand in Memorial Circle, a traffic circle connecting the National Mall to Arlington National Cemetery.

Critics argue the white concrete structure would obstruct views and disrupt airspace. The Federal Aviation Administration recommended the arch be continuously lit to avoid hazards, a condition aviation experts say adds risk. Defense Secretary Pete Hegseth described the arch as a generational national defense opportunity, though renderings do not mention the military equipment, such as snipers and ammunition, that Trump previously announced the structure would house.

The commission is expected to approve the arch, with Chair Mark Paoletta expressing strong support in a recent op-ed. The meeting will be online and is expected to last five hours due to nearly 120 registered speakers. Plaintiff Michael Lemmon, a retired foreign service officer, is the first speaker on the agenda. He has said he hopes to be buried in Arlington National Cemetery but not in the shadow of the arch.

The administration says construction will take two to three years, with crews working 20 hours a day. The first six months will involve underground excavation and foundation work. The planning commission is scheduled to adjourn at 6 p.m. ET on Thursday. All parties are watching Chutkan’s docket for a ruling that could stop work before it begins.