Parsons Receives 2025 Engineering Excellence Honor Award for Deer Creek Sanitary Tunnel and Pump Station Project

Rhea-AI Summary

Parsons Corporation (NYSE: PSN) has been awarded a 2025 Honor Award by the American Council of Engineering Companies (ACEC) for the Deer Creek Sanitary Tunnel and Pump Station project in the Water and Wastewater category. The project, which previously received the Grand Award from ACEC Missouri, involved the design and construction of a four-mile-long, 19-foot-diameter tunnel located 175 feet underground, capable of storing 38 million gallons of wastewater during wet-weather events. As the Deer Creek Watershed Consultant for Metropolitan St. Louis Sewer District, Parsons managed the development of infrastructure serving approximately 24,000 acres, including over 100 miles of sanitary and combined sewer systems. The project encompassed the construction of eight shafts, five diversion structures, and five hydraulic drop structures, demonstrating Parsons' expertise in delivering sustainable infrastructure solutions.

Positive

• Project received prestigious 2025 Honor Award from ACEC National and Grand Award from ACEC Missouri
• Demonstrates Parsons' capability in handling large-scale infrastructure projects
• Project serves a significant area of 24,000 acres with over 100 miles of sewer system
• Innovative tunnel design can store 38 million gallons of wastewater during wet-weather events

Negative

• None.

CHANTILLY, Va., June 05, 2025 (GLOBE NEWSWIRE) -- Parsons Corporation (NYSE: PSN) is proud to announce that the American Council of Engineering Companies (ACEC) at the national Engineering Excellence Awards (EEA) has awarded the Deer Creek Sanitary Tunnel and Pump Station project a 2025 Honor Award in the Water and Wastewater category. This prestigious recognition highlights Parsons' commitment to delivering transformative engineering solutions that address contemporary challenges and promote a sustainable future.

Previously, the project received the Grand Award in the Water and Wastewater category from ACEC Missouri, underscoring its exceptional engineering achievements at the state level. As the Deer Creek Watershed Consultant for the Metropolitan St. Louis Sewer District (MSD), Parsons played a pivotal role in this major initiative, one of the first large-scale projects under MSD’s Capital Improvement Program.

“The Deer Creek Sanitary Tunnel and Pump Station project exemplifies our dedication to improving vital infrastructure that enhances environmental sustainability and safeguards communities,” said Mark Fialkowski, President, Infrastructure North America for Parsons. “By leveraging innovative engineering and design, we’ve helped create a resilient system that will manage stormwater effectively and protect the region’s water resources.”

The Deer Creek Watershed in St. Louis County encompasses approximately 24,000 acres served by sanitary systems, including over 100 miles of sanitary and combined sewer. The extensive project, which spanned several years, involved preliminary and final design and construction-phase services for a tunnel, pump station, eight shafts, five diversion structures, and five hydraulic drop structures. One of the key components of the project was the design of a wet weather sanitary storage facility aimed at attenuating peak wet weather flows, mitigating overloading of the Deer Creek Trunk sewer, and preventing downstream sewer overloading, including at the Lemay Wastewater Treatment Plant.

The tunnel, approximately four miles long and 19 feet in diameter, was constructed 175 feet below the surface in solid rock and can store over 38 million gallons of wastewater during wet-weather events. This innovative solution ensures that the region can effectively manage excess stormwater, reduce environmental impacts, and maintain the integrity of its critical wastewater infrastructure.

Parsons has decades of experience designing, delivering, and protecting the infrastructure that connects our communities around the world, including roads and highways; bridges; passenger and freight rail; public transit; airports; and ports and waterways. Our experience includes more than 10,000 miles of roadways, 4,500 bridges, and more than 50 advanced traffic management system deployments that help cities and states improve safety and travel efficiency while also reducing emissions and energy costs to enhance the quality of life in the communities we serve.

To learn more about Parsons’ water and wastewater expertise, visit https://www.parsons.com/markets/water-wastewater/.

About Parsons
Parsons (NYSE: PSN) is a leading disruptive technology provider in the national security and global infrastructure markets, with capabilities across cyber and intelligence, space and missile defense, transportation, environmental remediation, urban development, and critical infrastructure protection. Please visit parsons.com and follow us on LinkedIn and Facebook to learn how we're making an impact.

Media Contact:
Lexus K. White
+1 470.510.6690
Lexus.White@parsons.com

Investor Relations Contact:
Dave Spille
+ 1 703.775.6191
Dave.Spille@parsons.us

FAQ

What award did Parsons (PSN) receive for the Deer Creek project in 2025?

Parsons received the 2025 Honor Award from the American Council of Engineering Companies (ACEC) in the Water and Wastewater category for the Deer Creek Sanitary Tunnel and Pump Station project.

What is the storage capacity of the Deer Creek Tunnel project by Parsons?

The tunnel is capable of storing over 38 million gallons of wastewater during wet-weather events.

What area does the Parsons Deer Creek Watershed project serve?

The project serves approximately 24,000 acres in St. Louis County, including over 100 miles of sanitary and combined sewer systems.

What are the key specifications of the Deer Creek Tunnel constructed by Parsons?

The tunnel is approximately four miles long, 19 feet in diameter, and constructed 175 feet below the surface in solid rock.

What previous recognition did Parsons receive for the Deer Creek project?

The project previously received the Grand Award in the Water and Wastewater category from ACEC Missouri.