II-40-Regional-Partnership-logonterstate 40, the “Triangle’s Main Street”, is a critical limited-access roadway that connects Orange, Durham, Wake and Johnston counties with the rest of North Carolina and the nation.

The I-40 Regional Partnership is a cooperative initiative of the Regional Transportation Alliance (RTA) business coalition in concert with NCDOT and other partners.

The I-40 Regional Partnership provides an ongoing focus on Interstate 40 in order to maintain and enhance its viability for travel and commerce, and to improve the travel experience on I-40 and core reliever/alternate routes.

Meredith McDiarmid, PE, NCDOT State ITS and Signals Engineer, serves as the I-40 Regional Partnership executive. The Partnership held its first meeting in spring 2009 and has met at least annually since that time. You can download a one page overview of the I-40 Partnership here.


Upcoming Annual Meeting:

I-40 Regional Partnership 11th Annual Meeting

Thursday, October 17, 2019
2 pm – 4:30 pm

SAS – Building C: Executive Briefing Center, Cary

Draft agenda concept

Welcome and overview (15 min)

  • Welcome and introductions – Joe Milazzo II, RTA
  • Acknowledgements – Geoff Lang, RTA 2019 Chair
  • I-40 Partnership overview – Meredith McDiarmid, I-40 Partnership Executive, NCDOT Mobility and Safety

Active projects on I-40 and parallel/reliever routes (20 min)

  • I-40 widening to Johnston Co. – Boyd Tharrington, NCDOT Division 5
  • I-40 Beautify Fortify initiative – Boyd Tharrington
  • I-440 widening and improvements – Boyd Tharrington
  • I-885 construction update – Boyd Tharrington
  • I-40 / NC 54 Cary-Raleigh intg. improvements –  Boyd Tharrington
  • I-40 / Aviation Parkway intg. improvements – Boyd Tharrington

Upcoming / Future projects (20 min)

  • I-40 / Airport Boulevard and other interchange improvements – Joey Hopkins, NCDOT Division 5
  • US 70 conversion to freeway between I-885 and I-540 – Joey Hopkins
  • US 1 north conversion to freeway between I-540 and Wake Forest – Joey Hopkins
  • I-40 widening in Orange Co. – NCDOT
  • I-540 on-ramp signals – Jennifer Portanova, NCDOT Mobility and Safety

RTA-NCDOT Innovations and Solutions segment (30 min)

  • I-40 managed freeway – NCDOT
  • I-40, I-540 Bus On Shoulder System (BOSS) – Pat Stephens, GoTriangle
  • I-40, I-540 shoulder managed lanes and other operational concepts – Chris Werner, NCDOT

Freeway research and learning (30 min)

  • FREEVAL-NC advanced freeway model – Mike Reese, NCDOT Mobility and Safety; Behzad Aghdashi, ITRE
  • I-40 crashes and safety pilot analysis – Drew Draper, Wetherill Engineering; Brian Murphy, NCDOT Mobility and Safety

Final remarks and adjourn


Future/potential topics

  • Make I-40 Better action team – TBA / Restriping, spot mobility project ideas
  • Diverging diamond interchanges — a decade of experience – NCDOT
  • Low-cost intersection innovations and applicability to interchanges – NCDOT

Past meetings:

Click here for prior I-40 Partnership meeting summaries

Click on Let’s Make I-40 Better Action Team for the most recent meeting – Friday, March 29, 2019


Primary links:


Partial list of I-40 initiative partners and participants

  • North Carolina Department of Transportation  (NCDOT)
  • Regional Transportation Alliance  (RTA)
  • NC Capital Area Metropolitan Planning Organization  (NC CAMPO)
  • Durham-Chapel Hill-Carrboro Metropolitan Planning Organization  (DCHC MPO)
  • Cities and Towns along the I-40 corridor
  • GoTriangle
  • NC State University
  • North Carolina Turnpike Authority
  • North Carolina State Ports Authority
  • North Carolina Railroad Company
  • North Carolina State Highway Patrol
  • The Research Triangle Park  (RTP)
  • Raleigh-Durham Airport Authority  (RDU)
  • Triangle-J Council of Governments
  • Federal Highway Administration  (FHWA)