Construction has been completed, including restoration. 

Background

The project area is located in the A-41 sewershed, a significant contributor to combined sewer overflows (CSOs) into rivers in the Pittsburgh region. Therefore, stormwater detention and/or green infrastructure measures will be prioritized during design.

Project Components

• Design and install infrastructure to help manage stormwater flows that are impacting private properties and the Allegheny River via CSOs
• Prioritize stormwater detention and/or other green infrastructure systems where peak flows from the watershed can potentially be captured and managed
• Design and install roadway improvements to enhance both road surface quality and drainage

Project Accomplishments

This area of Stanton Heights has historically experienced flooding on public and private property due to inadequate stormwater infrastructure. It is within the A-41/Heth’s Run sewershed and experienced significant combined sewer overflows into the Allegheny River. To address this, our engineering team designed a stormwater improvement project with these goals in mind:

• Reduce overland flooding in the area
• Achieve downstream flood reduction and reduce peak water flows within the sewers
• Install approximately 650-feet of new dedicated storm sewer.
• Install two subsurface stormwater detention systems under Dragoon Way and Adelphia Street (see above right image).
• Improve roadway drainage systems via new pavement and curbs
• Rehabilitate the stormwater sewer outfall, located below Adelphia Street

This project began in Spring 2024 and was completed in August 2024. The stormwater system improvements will manage stormwater on 2.65 acres of land, of which, a little over half is impervious surface, or hard surfaces that do not absorb stormwater.

Although residents will not see the underground stormwater system, they can have every confidence that the storage system is working for them during heavy rains. This was a $1.7 million investment in the area.