Alternative Project Delivery

We’re global leaders in alternative project delivery, turning complex challenges into innovative, high-performing solutions across Design-Build, Progressive Design-Build, Public-Private Partnerships (P3s), and Delivery Partner methodologies. We integrate in-house design, engineering, and construction capabilities with innovative tools and sustainable practices to deliver complex projects efficiently and cost-effectively. Through collaborative partnerships and early contractor involvement, we optimize risk, ensure on-time delivery, and achieve high-quality outcomes across transportation, infrastructure, defense, energy, and water sectors.

APD Experience In North America As Design-Builder

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Bridges

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Across 230+ Projects

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Interchanges

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Miles Of Transit

Water And Environmental Projects

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Employees With APD Experience

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APD Experience In North America As Owner’s Representative

Public-Private Partnerships (P3s)

We have a proven track record of delivering innovative solutions through Public-Private Partnerships (P3s). By leveraging our expertise in infrastructure development, financing, and operations, we collaborate with public and private entities to deliver transformative projects that drive economic growth and improve communities. Our P3 experience spans diverse sectors, including transportation, water, and energy, where we have consistently delivered value by optimizing risk allocation, ensuring on-time delivery, and achieving long-term performance goals. With Parsons as your P3 partner, you gain a trusted advisor committed to creating sustainable and resilient infrastructure solutions.

Gordie Howe International Bridge — Detroit, Michigan & Windsor, Ontario

The Gordie Howe International Bridge is a public-private partnership (P3) project to design, build, finance, operate, and maintain a new international crossing between Windsor, Ontario and Detroit, Michigan. The Vision […]

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Louis-Hippolyte La Fontaine Tunnel — Quebec, Canada

The ministère des Transports et de la Mobilité durable (MTMD) of Quebec is currently undertaking a major rehabilitation project for the Louis-Hippolyte-La Fontaine Tunnel. The goal of the rehabilitation is […]

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Northwest Corridor Express Lanes – Atlanta, GA

The award-winning Northwest Corridor Express Lanes is the largest constructed transportation project in Georgia’s history and the first Georgia Department of Transportation (GDOT) project to be procured as a design-build […]

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Goethals Bridge Replacement – Staten Island, NY to Elizabeth, NJ

Parsons is the lead designer for the $1.5 billion replacement of the Goethals Bridge, which spans the Arthur Kill between Staten Island, NY, and Elizabeth, NJ. The design accommodates potential […]

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Progressive Design-Build

We are a leader in Progressive Design-Build delivery, offering a collaborative and flexible approach to project execution. By integrating design and construction teams early in the process, we foster innovation, streamline decision-making, and deliver tailored solutions that meet our clients’ unique needs. Our experience spans complex projects where early contractor involvement and open communication have been critical to success. With a focus on transparency and partnership, Parsons ensures that every Progressive Design-Build project achieves optimal outcomes in terms of cost, schedule, and quality.

McKalla Station Design-Build — Austin, TX

Since 1985, the Capital Metropolitan Transportation Authority (CMTA), also known as CapMetro, has provided comprehensive mass transit services across a 500-square-mile area, including the City of Austin and its surrounding […]

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Kicking Horse Canyon: Phase Four — British Columbia, Canada

The Kicking Horse Canyon is a vital commercial and tourist corridor located in the heart of the Canadian Rockies – known for spectacular scenery and long considered one of the […]

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Anacostia River Tunnel Project – District Of Columbia (D.C.)

Our tunnel experts assisted the District of Columbia Water and Sewer Authority (DC Water) with implementing a long-term control plan (LTCP) for the Anacostia River Tunnel and its combined sewer […]

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Newark Liberty International Airport Terminal Redevelopment – Newark, New Jersey

Built in 1928, the Newark Liberty International Airport was the first major commercial airport in the United States and is one of the nation’s oldest airfields. When Terminal A opened […]

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MIA People Mover – Miami, FL

Moving People To increase capacity, enhance efficiency and safety, reduce delays, and modernize facilities, the Miami-Dade County Board of Commissioners adopted a master plan for Miami International Airport (MIA). A […]

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Delivery Partner Methodology

As a trusted Delivery Partner, we provide comprehensive program management services that drive project success from inception to completion. Our Delivery Partner methodology emphasizes collaboration, strategic planning, and proactive risk management to ensure seamless execution of large-scale, complex programs. By aligning with our clients’ goals, we act as an extension of their team, delivering expertise in design management, procurement, construction oversight, and stakeholder engagement. With Parsons as your Delivery Partner, you gain a dedicated ally committed to delivering projects that exceed expectations and create lasting value.

MPA Contract Extended to Continue Delivering The Transformational Hudson Tunnel Project, The Most Urgent Rail Project In The United States 

09-30-2025

NEW YORK — (September 30, 2025) — MPA Delivery Partners, the joint venture of Mace, Parsons Corporation (NYSE: PSN), and Arcadis (EURONEXT: ARCAD) announced today that the team has been awarded a $665 million, 4.5-year contract extension by the Gateway Development Commission (GDC) to continue managing the successful delivery of the Hudson Tunnel Project (HTP).  The HTP is progressing on-schedule and expected to create more than 95,000 jobs around the United States and generate more than $19 billion in economic activity. In addition to the thousands of talented employees in the New York/New Jersey region, the project is driving demand for U.S. suppliers of steel, aggregates, rail and track, and ventilation systems. Companies from North Carolina, Texas, Pennsylvania, Ohio, Alabama, Colorado, and Tennessee are benefiting from the Hudson Tunnel Project, unlocking the power of American ingenuity, and proving that the […]

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