The rail program's overall price rose 30% since 2010 to $24.6 billion.

The global construction market is red hot for some firms and stone cold for others as contractors deal with unpredictable project risks while readying for new growth opportunities.

Remote site, political tensions and pandemic all added to delays in construction.

Addressing weaknesses laid bare by COVID-19, infrastructure projects are poised to drive world economies back to pre-pandemic positions with a simple mantra to build back better. As global design firms restructure operations, projects also are being reconfigured to fit a continental shift in client priorities.

Pandemic and energy transition usher in new needs for firms' expertise as reality finally sets in on the globe's ecological fragility. See which firms made this year's list.

São Paulo metro work constitutes region's largest P3 contract.