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QED991
QED991 was a NYCDDC infrastructure project in Bayside and Flushing, Queens that upgraded the trunk water main system to add redundancy and reinforce high-pressure lines, while also replacing aging distribution water mains and implementing major sewer and drainage improvements to increase capacity and eliminate flooding in sensitive areas.
The trunk water main phase included over 14,000 LF of 72-inch, 60-inch, and 48-inch mains, including butterfly and regulator valves and underground concrete chambers. Distribution system upgrades included over 25,000 LF of new ductile iron water mains replacing aging pipes dating from 1912 to 1940.
Sewer and drainage upgrades included over 7,700 LF of sewers and installation of 125 catch basins to increase capacity and eliminate flooding in sensitive areas.
The work also included three trenchless crossings beneath the Clearview Expressway using the pilot tube guided auger-bore method, as well as comprehensive final street restoration across 56 city blocks, including 28,000 LF of curbs and 83,000 SF of sidewalks, ADA-compliant ramps, and full pavement restoration.
engineering leadership
In collaboration with NYCDDC, the City’s primary capital construction agency, mirabal, in joint venture, leads the engineering team providing all necessary services required for the full construction implementation of the project including management, inspection, coordination, and administration.
project overview
trunk water main scope
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QED991 – new trunk & distribution water mains and infrastructure upgrades along 33rd avenue and surrounding areas in bayside and flushing. manhattan, ny
An extensive project spanning between Bayside and Flushing, QED991 is high-profile and complex. The project upgrades the trunk water main system adding redundancy to the City’s network while reinforcing the transmission (high pressure) lines
project overview
project higlights
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NYCDDC project.
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Extensive scope of installations conveying large scale and complexity of enhancements.
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Enhanced vast water infrastructure upgrades for reliable supply and future demands.
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The project was completed on schedule and within the approved budget.
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Comprehensive collaboration with NYC agencies showcasing effective teamwork essential for large-scale projects.
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Urban development integration fostering sustainable growth and resilience to the city’s infrastructure.
engineering leadership
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In collaboration with NYCDDC, the City’s primary capital construction agency, mirabal, in joint venture, leads the engineering team providing all necessary services required for the full construction implementation of the project including management, inspection, coordination, and administration.
MIRABAL Role
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MIRABAL (Prime, in Joint Venture) led the engineering team and provided project implementation services—management, inspection,
and coordination—in collaboration with NYCDDC, through:
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Oversight of construction inspection activities for trunk and distribution water main installations, including appurtenances and underground concrete chamber construction.
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Oversight of construction inspection activities for sanitary and storm sewer upgrades, drainage capacity improvements, and catch basin installation.
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Oversight of construction inspection activities for trenchless tunneling operations beneath the Clearview Expressway, including three pilot tube guided auger-bore crossings.
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Oversight of construction inspection activities for final street restoration, including curb and sidewalk reconstruction, ADA-compliant ramps, and full pavement restoration.