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Flatiron Joint Venture Wins $449.9M Contract Adding Southeast Segment to Raleigh’s Triangle Expressway

Planned design of the future I-87/NC 540 interchange portion of the Triangle Expressway Southeast Expansion. (Photo courtesy of ICE of Carolinas, PLLC)
Planned design of the future I-87/NC 540 interchange portion of the Triangle Expressway Southeast Expansion. (Photo courtesy of ICE of Carolinas, PLLC)
RALEIGH, NC — The Flatiron-Fred Smith Company joint venture team currently is collaborating with the North Carolina Turnpike Authority on design and preconstruction planning for the Triangle Expressway Southeast Extension, the third contract for Flatiron on the Triangle Expressway project. The $449.9 million project adds 6.6 miles of new highway and three new interchanges.

“We welcome this opportunity to construct another section of the Triangle Expressway,” said Jim Schneiderman, Flatiron Senior Vice President for the Mid-Atlantic Division. “This important roadway project will pave the way for continued growth and greater opportunity in this rapidly growing urban area by making day-to-day travel safer and more efficient.”

Flatiron — in collaboration with joint-venture partner Fred Smith Company and lead designer ICE of Carolinas — will design and construct a six-lane divided highway to extend the Triangle Expressway, beginning at Rock Quarry Road in Raleigh and extending to US 64/I-87.

Significant project elements include:

  • New interchanges at Rock Quarry Road, Auburn Knightdale Road, and Poole Road
  • 19 new bridges, including approximately 1,600 feet of dual bridges over the Neuse River
  • Rehabilitation and widening of the existing I-540 bridge over I-87
  • Realignment of the existing Neuse River Trail
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The team’s design approach includes an “over-under” direct-connector ramp for southbound I-87 to westbound NC-540 traffic. The innovative approach will reduce costs, accelerate schedules, and minimize traffic impacts during construction. Additionally, the team has been able to optimize design to reduce planned earthwork by 1.3 million cubic yards.

Flatiron is currently constructing two other segments of the NC 540 Raleigh Outer Loop as the lead partner in a joint venture with Branch Civil.

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