NJ Turnpike Interchange 6 to 9 Widening Program

Making Way for Wider Highway
East Windsor, New Jersey

Steady elevations in New Jersey population and employment will increase New Jersey Turnpike traffic northbound by nearly 65 percent and southbound by 92 percent before 2032. The Interchange 6 to 9 Widening Program, the largest expansion in Turnpike history, brought six new lanes and a total of 170 new lane miles to one of the most heavily traveled sections of New Jersey highway.

$200 million

below budget



During the preliminary phase, we conducted environmental studies and provided conceptual design for 20 miles of roadway, structural, drainage, and stormwater management facilities, which required new lane alignment as well as modifications to existing toll plazas, service areas, and maintenance yards. During the final phase, we were the prime designer responsible for relocating Interchange 8’s toll plaza and ramp, widening Routes 33 and 133, creating a new grade separated interchange, and relocating local roadways. We supported Section 7's final design through preliminary and environmental engineering, civil engineering for two road relocations, stormwater management, traffic maintenance, ITS design, and structural engineering for two local bridge reconstructions and four mainline retaining walls.


NJ Turnpike Authority


$180 million


Recognition Award

ACEC National

Honor Award


Top Roads

Roads & Bridges

Best Regional Projects, Award of Merit

Engineering News-Record


  • Engineering
  • Environmental


  • Transportation


  • Northeast