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Reno-Sparks Freeway Traffic Study

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I-580 NB_I-80 Spagetti Bowl 06.29.316

Study Information

I-580 NB Preshots 03.25.16_21The number of vehicles traveling the Reno-Sparks area continues to increase.  That's why NDOT has begun a traffic study to identify future transportation improvements.  The study will help identify improvements to Interstate 80, Interstate 580 and U.S. 395, including the I-80/I-580 Spaghetti Bowl. It will also analyze future traffic projections and identify infrastructure needs through 2040.

Improvements will include short, mid and long-range projects. In fact, NDOT already has plans for additional freeway digital message signs that will advise drivers of upcoming traffic conditions near the Spaghetti Bowl. Long-range projects may include the potential of widening the freeway and interchange ramps.  The study areas include:

Regional Limits

  • I-80
    • Robb Drive to USA Parkway
  • I-580
    • Mt. Rose Highway to Red Rock Drive

Interior Limits:

  • I-80
    • Keystone to Pyramid Highway
  • I-580/U.S. 395
    • McCarran/Clear Acre to Virginia/Keitzke

Freeway and interchange ramps outside the Spaghetti Bowl will also be studied as well as on and off ramp intersections and interchanges near Stead Boulevard, Golden Valley Drive, Sparks Boulevard, Patrick and USA Parkway.

Reno-Sparks Freeway Traffic Study map


NDOT is the lead agency overseeing the study. Since it impacts the whole County, NDOT is also involving local and federal agencies in the study process. Agencies that will be actively participating int he study and development of alternatives are: 

  • The Regional Transportation Commission of Washoe County (RTC)
  • City of Reno
  • City of Sparks
  • Washoe County
  • Federal Highway Administration (FHWA)
  • Truckee Meadows Regional Planning Agency
  • Reno-Spark Indian Colony
  • Reno-Tahoe International Airport

Reno Spaghetti Bowl Charrette

As part of the Reno-Sparks Freeway Traffic Study, NDOT hosted the Reno Spaghetti Bowl Charrette on May 28, 2016. The charrette was an all day event that facilitated conversation between the traffic study team, key stakeholders and the public. Those who attended were able to hear from the traffic study team, learn about, comment and vote on potential short-term and mid-term concepts for the Spaghetti Bowl and provide comments to the study. A major component of the Charrette was allowing stakeholders to vote on functional priorities for the Spaghetti Bowl during the ensuing design and rehabilitation process. Below is the charrette report and appendix.


The Reno-Sparks Freeway Traffic Study will be completed in multiple stages:

  • Short-term concepts for the Reno Spaghetti Bowl improvements will be finalized in late 2016
  • Long-term concepts and the final study should be completed in by late 2017


For more information contact:

Nick Johnson, NDOT Project Manager

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