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Visualisation of high speed train Power plant at night View of the suspension bridge at night Visualisation of the proposed extension Children holding up books East Side Access

United States of America

Our business in North America is thriving. With over 2300 staff in 62 US and Canadian cities, Mott MacDonald is delivering pivotal projects in the transportation, water, built environment, and energy sectors.

We provided programme and construction management for one of America’s largest infrastructure projects, the East Side Access project in New York City.


We implemented the sustainable airport planning, design, and construction guidelines for the Midfield Satellite Concourse expansion at Los Angeles International Airport, which forms part of a $5 billion modernisation program.

In 2012, Airbus made the decision to become the first new manufacturer of large commercial aircraft in the US in more than 40 years. We were selected to provide programme management services for the design and construction of the Airbus Final Assembly Line, in association with Hoar Program Management.


We have a strong track record spanning three decades in the power engineering industry, covering thermal and renewable generation as well as transmission and distribution.

At Brayton Point power plant we helped deliver the first US cooling towers to be built in 15 years, 25% ahead of schedule and 20% under budget.

For Deepwater Wind, developer of America's first offshore wind farm, we provided owner’s engineering services for electrical studies, and lender’s engineering services including bankability assessments before potential lenders were approached.

Highways and bridges

We provided programme and design management for the Alaskan Way viaduct and seawall replacement program. A 1.7-mile (2.7km) bored tunnel for a two-level stacked roadway replaced the viaduct along the existing SR-99 corridor.

For the Brooklyn-Battery tunnel in New York City, we provided construction administration and inspection services for the replacement of equipment including switchgear and electrical feeders at the four tunnel ventilation buildings. In the aftermath of Superstorm Sandy, we designed replacements for all electrical, mechanical, structural, and communications equipment.

We provided programme management and monitoring design and construction for the new US$6 billion, 1-mile (1.6km) San Francisco-Oakland Bay self-anchored suspension bridge. A range of technical, logistical, and procurement proposals shaved US$400 million off the projected delivery cost.


We were awarded project management, preliminary design, environmental engineering, permitting, and right-of-way acquisition services contracts for three segments of the California High Speed Rail system. Spanning 800 miles (1,287km) from San Francisco and Sacramento in the north to San Diego in the south, and operating at speeds up to 220mph, it is projected to transport 100 million passengers per year by 2030.

As lead consultant for the Crenshaw/LAX transit corridor, we provided engineering services in support of the environmental clearance and development of the design-build delivery. The corridor extends 8.5 miles (13.7km) including at-grade running sections, aerial alignment, underground cut and cover segments, tunnel segments, underground stations, and one aerial station.

We provided programme and construction management for America’s largest infrastructure project, the US$7.3 billion East Side Access project in New York City, connecting the Long Island Rail Road line into Grand Central Station.

Conditions range from soft ground in Queens to hard rock under Manhattan, requiring a huge variety of tunnelling techniques. With many contracts progressing simultaneously in complex and challenging conditions, our industry-leading technical expertise and experience of delivering some of the world’s toughest tunnelling projects is being used to keep East Side Access on track.


In Washington, DC we are providing programme management in support of DC Water's ongoing $350 million 10-year water system capital improvement program. Having implemented the water system geographic information system, the team helped develop an integrated water distribution and sewer collection system.

Our water team provided engineering services to Aqua Pennsylvania on the upgrade of the 16 million gallons per day (61 million litres per day) Neshaminy Water Treatment Plant: one of the first major water treatment plant projects fully executed using Building Information Modelling.

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