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Friday, November 13, 2026Reporting on the stories people talk about.
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Dulles Airport Sues Firms for $3.75 Billion Train Project

The Metropolitan Washington Airports Authority seeks bidders for a two-station underground extension and a new pedestrian tunnel at the airport.

By Beatriz Soto ·

Illustration for: Dulles Airport Sues Firms for $3.75 Billion Train Project
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The Metropolitan Washington Airports Authority has launched a search for companies to handle a $3.75 billion infrastructure project at Dulles International Airport. The contract covers the design and construction of a new two-station extension for the underground AeroTrain system. It also includes the creation of a 'Center Spine' pedestrian tunnel.

This tunnel will link the main terminal with future concourses. The Authority stated that the project is already budgeted. Firms interested in the work are being asked to express their interest in the upcoming procurement process. The scope involves both rail infrastructure and large-scale pedestrian walkways.

The project aims to improve connectivity within the airport grounds. The AeroTrain extension will add two new stops. The pedestrian tunnel will provide a direct link between the existing terminal and areas planned for future expansion. This work is part of a larger effort to manage passenger flow and facility growth.

The Authority identified the contract value at $3.75 billion. This figure includes both the design phase and the physical construction. The search for interested firms marks the initial step in the bidding process. No specific firms have been named in the initial request for interest.

The new facilities will serve as critical connectors for the airport's expanding footprint. The pedestrian tunnel is designated as the 'Center Spine.' It is designed to accommodate high volumes of foot traffic between terminal hubs. The rail extension will serve specific new concourse locations.

The Authority is coordinating this project with other planned developments at the site. The request for interest allows potential contractors to gauge their capacity before full proposals are due. The $3.75 billion budget remains fixed for this specific scope of work. The timeline for construction has not yet been detailed in the initial announcement.

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