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.
This $58-million project to build a 138-kV gas-insulated substation challenged the team to work with a site footprint and schedule that were both tight.
The project team was hired to build a 138/23-kV gas-insulated substation and associated infrastructure in the heart of Pittsburgh for electric utility Duquesne Light.
Built in the 1980s, the county’s light rail vehicle maintenance facility needed a complete rehabilitation. Work pits and other sections used to maintain the rail fleet were severely corroded and in a state of disrepair.