City Upgrades Over 1.6 Miles of Water Mains in Park Slope and Renovates Flatbush Avenue Plaza

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City Upgrades Over 1.6 Miles of Water Mains in Park Slope and Renovates Flatbush Avenue Plaza

Combined sewers also upgraded to reduce flooding

DDC: Denisse Moreno, 718-391-1854, morenode@ddc.nyc.gov

(Brooklyn, NY – November 1, 2024) The NYC Department of Design and Construction (DDC) today announced the completion of a $40.7 million project in Park Slope, Brooklyn that replaced over 1.6 miles of older water mains, upgraded local combined sewers to improve stormwater drainage and renovated a key traffic triangle on Flatbush Avenue just north of Grand Army Plaza. The project was managed by DDC for the NYC Department of Environmental Protection (DEP) and the NYC Department of Transportation (NYC DOT).

The project replaced 1.6 miles of water mains, some dating back more than 100 years, in Park Slope, Brooklyn

“This project replaced water mains dating as far back as 1913, ensuring the long-term ability to meet the needs of residents and businesses in that area,” said NYC Department of Design and Construction Commissioner Thomas Foley. “Improvements were also made to help drain stormwater flow and prevent flooding in the area while also improving public space and pedestrian access. With our partner agencies, we will continue to implement much-needed infrastructure upgrades to Brooklyn communities.”

Welding a new 72-inch steel trunk main in the intersection of St. John’s Place and 8th Avenue

Smaller water mains up to 111 years old were replaced with more durable ductile iron pipe while on Flatbush Avenue a new 72-inch stainless steel trunk main was installed.

To improve the overall capacity of the drainage system in this commercial and residential area, over 5,000 feet of combined sewers were replaced. To better manage stormwater, over 40 catch basins were installed and to enhance fire protection 30 new fire hydrants were added. Over 1,100 feet of curb were replaced, 14,500 square feet of sidewalk were upgraded, and more than four acres of asphalt were replaced overall. The project also upgraded nearly 20 corner pedestrian ramps to be ADA-compliant.

The neighborhood’s 8th Avenue Triangle was revitalized with improvements to sidewalk, curb, neckdown, curb extensions, new benches, and granite edging. Additionally, 130 shrubs were planted in the plaza.

8th Avenue Triangle was renovated with new sidewalk, shrubs, benches, more

About the NYC Department of Design and Construction
The Department of Design and Construction is the City’s primary capital construction project manager. In supporting Mayor Adams’ long-term vision of growth, sustainability, resiliency, equity and healthy living, DDC provides communities with new or renovated public buildings such as firehouses, libraries, police precincts, and new or upgraded roads, sewers and water mains in all five boroughs. To manage this $33 billion portfolio, DDC partners with other City agencies, architects and consultants, whose experience bring efficient, innovative and environmentally-conscious design and construction strategies to City projects. For more information, please visit nyc.gov/ddc.