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Transforming journeys and unlocking growth in London and South East England with the Elizabeth line

Over two decades, we’ve supported Crossrail to deliver the Elizabeth line, a complex and significant transport solution in London, U.K., that paves the way for social, environmental and economic opportunities of national significance that will last generations. The program delivery also creates an immense learning legacy that will benefit future major infrastructure development and their communities globally.

Advancing data-driven decarbonization to cut aviation emissions at Heathrow Airport

The aviation industry is at a pivotal moment. With increasing pressure from consumers and governments to decarbonize, airports around the world are seeking tangible, impactful solutions. Heathrow — “Britain’s Aviation Hub” and a global leader in aviation — isn’t just

Cleaning up the River Thames through the UK’s largest ever water infrastructure program

The Thames Tideway Tunnel will clean up one of London’s greatest natural assets, the iconic River Thames, protect it for generations to come and improve the quality of life for all Londoners.

Optimizing water, wastewater performance for a growing Illinois community

For more than 25 years, Jacobs has helped Carol Stream, Illinois, deliver clean, reliable wastewater treatment while building lasting community connections. From hosting family-friendly public events to earning national safety awards and supporting a local Little Free Library, Jacobs’ work goes far beyond operations — it’s a model for infrastructure that supports both public health and civic pride.

Expanding capacity and delivering faster, more reliable transit on Chicago’s Red and Purple Lines

Chicago’s busiest rail corridor just got its biggest upgrade in a century. Jacobs helped deliver one of the Chicago Transit Authority’s largest-ever design-build projects — replacing aging infrastructure, rebuilding stations and introducing modern, accessible, rider-focused service that strengthens communities and keeps the city moving.

Advancing inclusive rail infrastructure to enable accessible travel across the United States

Jacobs is leading a national effort to create truly accessible rail travel. For more than a decade, we’ve worked with Amtrak to modernize hundreds of stations, ensuring passengers of all abilities have equal access to safe, welcoming and fully ADA compliant facilities.

Restoring estuary habitats to reduce flood risk and support wildlife

The Lower Otter Restoration Project is an ambitious, large-scale habitat recreation project funded and promoted by the Environment Agency in conjunction with landowner Clinton Devon Estates, designed by an integrated team of technical experts at Jacobs and constructed by Kier. Working with nature, the project is collaborating with the local community and key partners to adapt and improve the lower section of the River Otter, its estuary and its immediate surroundings for future generations.

Upgrading Singapore's grid for tomorrow

Jacobs is supporting Singapore’s energy transition through strengthening grid resilience, enabling renewable energy integration and meeting rising electricity demand. Through this vital infrastructure work, Jacobs is also helping to build Singapore’s next-generation energy workforce through hands-on training, mentorship and on-the-ground project experience.