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NDOT Announces Exit Numbers Changing on I-580
Nevada Department of Transportation to change exit numbers this summer

Re-posted on behalf of Nevada Department of Transportation 

Reno, Nev. May 13, 2019. The Nevada Department of Transportation will change exit numbers on Interstate 580 from South Carson Street in Carson City to the Reno spaghetti bowl beginning this summer.

The current exit numbers range from 38 to 68B, and will be replaced with new, lower exit numbers corresponding with interstate roadway mileage, beginning at the southern end of the I-580 Carson City Freeway and progressing north to the Reno spaghetti bowl.


In advance of this change, we are encouraging organizations to prepare to update any the following which may apply:

Advertising- Advertisers should prepare to update any billboard, radio, print or other advertising featuring I-580 exit numbers beginning this summer. Simply using the street name (i.e. “Use Plumb Lane exit”) and not the interstate exit number is one suggestion for advertising in the interim period (summer 2019 through early 2020).

Logistics- Any organizational logistics relying on exit numbers for dispatch, deliveries, wayfaring and more should take heed of this change and prepare to update systems as exit numbers are changed.

Publications- Publishers should prepare to remove the existing exit numbers from any listing of I-580 exit numbers as the exits are changed later this year.


The specific schedule has not been finalized. In general, exit numbers in Carson City are expected to change beginning this summer. I-580 exit numbers from Washoe Valley to the Reno spaghetti bowl are anticipated to change beginning in the fall.

First responders will be alerted prior to specific exit number changes, and electronic roadside signs will be placed during exit number sign changes to alert drivers of the change.


The exit numbers are being changed per federal requirements. The federal Manual on Uniform Traffic Control Devices ensures that freeway signs and mileposts are consistent nationwide to convey a clear message and help guide, warn and regulate traffic. Federal guidelines require interstate exit numbers to reflect mileage specific to that corridor. Current I-580 exit numbers reflect U.S. 395 mileage beginning at the Nevada-California state line near Topaz Lake. Now that the I-580 connection from the Reno spaghetti bowl to south Carson City is complete and supersedes the previous U.S. 395 designation, exit numbers are being changed to reflect interstate mileage beginning at the I-580 junction with south Carson Street and ending at the Reno spaghetti bowl.

Small exit number sign panels at the top of overhead signs will be replaced, as well as roadside exit number signs at each exit, to reflect the new exit numbers.



Information and a map of the future interstate exit numbers is available at www.nevadadot.com/exit.

For questions, contact NDOT customer service at (775) 888-7000.


Meg Ragonese

Nevada Department of Transportation Public Information Officer


Office:  (775) 888-7777 or (775) 888-7172    Cell: (775) 443-5926

Call 311 to find resources, ask questions, and utilize Washoe County services. Learn More »
Call 311 to find resources, ask questions, and utilize Washoe County services. Learn More »