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Kew Gardens Interchange

Queens, NY
Award: High Performance

Project Team:

Owner: New York State Department of Transportation

Contractor: Halmar International

Architect: Design-Build Halmar International

Engineer: Halmar International

Concrete: Halmar/Best Concrete Mix Corp.

Slag Cement: Lehigh Hanson

Halmar International used slag cement for durability on this design build three highway (Grand Central Parkway, Jackie Robinson Parkway, and VanWyck Expressway) interchange. Slag cement was used for mass concrete and increased the roadway durability. The interchange is a high volume roadway connecting John F. Kennedy International Airport (JFK), LaGuardia Airport (LGH), and Long Island.

% Slag Cement Replacement

40 to 70% on mass concrete

% Portland Cement

60 to 30%

% Other SCM (if applicable)


Til600 NY

Water/cementitious ratio

0.38 to 0.45

7-day strengths

4000 psi (28 MPa)

28-day strengths

7000 psi (48 MPa)


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