• Corporate HQ, NY
  • Melville, NY
  • Iselin, NJ
  • Ossining, NY
  • Mount Laurel, NJ

Northern State Parkway/Route 110 Interchange Reconstruction


Melville, New York<br style='line-height:2px'>New York State Department of Transportation

A HAKS-led joint venture provided construction inspection services to the New York State Department of Transportation (NYSDOT), Region 10, for reconstruction of the Northern State Parkway (NSP)/Route 110 interchange, the largest project on Long Island and Region 10. The NYSDOT initiated the $60 million reconstruction to improve safety and mobility for motorists and pedestrians; alleviate long delays at signalized intersections; eliminate roadway flooding; and provide standard under-bridge clearances and lane widths and a continuous pedestrian sidewalk network.

Reconstruction required the replacement of a 70-year-old rigid frame bridge carrying NSP over Route 110, two very heavily traveled roadways; the reconfiguration of the NSP/Route 110 interchange from a cloverleaf to a modified diamond interchange; the widening of Route 110 from two to three lanes in each direction; and the improvement of the Route 110 intersection with Old Country Road.  

Services included detailed inspection, on-site testing of materials, field measurements and data collection for submission of monthly and final construction estimates, progress reports and preparation of record plans. Field staff monitored the adequacy of the contractor’s personnel, equipment, material supplies and CMP schedule.

A value engineering plan recommended constructing a temporary bridge for east- and westbound traffic, demolishing the existing bridge, and constructing the proposed bridge in one stage of construction—all while maintaining traffic flow. The plan, which required a temporary bypass road over Route 110, put the project back on its originally scheduled completion date of December 31, 2013, a savings of 8 months.

Sustainable features included reuse of topsoil and fill; preservation and reuse of granite from the original bridge; a rain garden and multiple recharge basins; increased number of trees; and a continuous shoulder lane for bicyclists.

Construction began in May 2011 and was substantially completed in September 2013. The project received the 2014 ACEC-New York Gold Award, the 2013 ASCE-Long Island Transportation Project of the Year and the 2011 Evergreen Rating, the highest level of sustainability under Green Leadership in Transportation Environmental Sustainability certification.