Top 50 Transit Facility Engineering Firms for 2025

AECOM, Jacobs, STV, Kimley-Horn, EXP, Arup US, WSP, and CDM Smith top Building Design+Construction's ranking of the nation's largest transit facility engineering and engineering/architecture (EA) firms for 2025, as reported in BD+C's 2025 Giants 400 Report.
Source David Barista, Editorial Director
March 16, 2026
Photo by Ali Sedigh Moghadam on Unsplash
Photo by Ali Sedigh Moghadam on Unsplash

Photo by Ali Sedigh Moghadam on Unsplash

AECOM, Jacobs, STV, Kimley-Horn, EXP, Arup US, WSP, and CDM Smith top Building Design+Construction's ranking of the nation's largest transit facility engineering and engineering/architecture (EA) firms for 2025, as reported in BD+C's 2025 Giants 400 Report.

Source: Building Design+Construction's 2025 Giants 400 Report

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