For the second consecutive year, Top 400 revenue has increased by a double-digit percentage—rising 13.9% to $556.9 billion from $488.98 billion last year while median firm revenue is also up 10.9% to $629.5 million.
Construction is underway to replace Commercial Street Bridge, an 861-ft-long open spandrel concrete arch structure that rises up to 85 ft above Nine Mile Run and Frick Park in Pittsburgh.
Cutting carbon and hardening infrastructure both requires a revolution in how civil engineering is practiced, says veteran engineer and sustainability guru Bill Wallace.
Defendants include a contractor now at work to replace a deteriorated section of the 56-year-old Providence span carrying I-195 that has been shut since December