Interstate 580 Nevada

North End
South End


Interstate 580 overlays the U.S. 395 freeway in western Nevada between Fairview Drive in Carson City and Interstate 80 in Reno. Completion of the freeway through Washoe Valley connected the Nevada capital city to the Interstate system for the fist time. I-580 serves both through traffic and commuters, varying between urban stretches through Reno and Carson City, and hugging the eastern slopes of Steamboat Hills to the Galena Creek concrete arch bridge overlooking Pleasant Valley.

Opened at 10 AM on August 2, 2017,8 the 3.146 mile link from Fairview Drive (Exit 38) south to U.S. 50 and 395 at South Carson Street completed the 35-mile Interstate. Exit numbers along I-580 use U.S. 395 mileposts, counting up from the California state line at Topaz Lake.

High Priority Corridor

Interstate 580 in Nevada is part of High Priority Corridor 68: Washoe County Corridor and U.S. 95 Las Vegas to Reno Corridor.


The signing of Interstate 580 varied over the decades leading up to 2012, when the route was fully signed along U.S. 395 from Carson City northward. Prior to that time, the route was unmarked and only acknowledged on NDOT mileposts along the Martin Luther King, Jr. Memorial Highway through Reno as IR 580.

During the early to mid 1980s, Jeff Royston noted that some shielding for Interstate 580 may have been posted. Dave Billeci further added that in 1983 he observed cosignage for I-580 and U.S. 395 in Reno south of the interchange with Interstate 80, as well as on overhead signs along I-80 east at the exchange. He noted that these were removed a few years later.1

A short stretch of Interstate 580 was opened to traffic from I-80 south to Villanova Drive in 1980. U.S. 395 temporary shifted to Kietzke Lane (SR 667) to continue south to Virginia Street. The unsigned route was sometimes shown as “Spur I-580” on 1980s road maps.

The 2002 FHWA Route Log and Finders List officially recognized Interstate 580 as extending between Neil Road (formerly Del Monte Lane) north to Interstate 80 at Exit 15 via U.S. 395. However, a 1984 letter agreement previously gave FHWA approval to extend I-580 along additional segments of freeway as they were constructed.2

With the completion of the Galena Creek/Pleasant Valley Bypass in August 2012, the route from U.S. 50 (Williams Street) in Carson City north to Reno was designated as Interstate 580, with signs installed throughout the route by October 2012. The lone exception was the segment of the Carson City Freeway spurring south to Fairview Drive. NDOT listed that portion officially as a part of IR580, but signed it solely as U.S. 50. With completion of Phase 2B-2 south from Fairview Drive to South Carson Street, I-580 was fully signed south of Williams Street.

Planning for a the North-South Freeway in Reno started in 1957. Studies underway by 1963 resulted in a recommended freeway alignment in 1968. Community opposition however, and lawsuits filed in 1972 and 1973, required an Environmental Impact Study (EIS) be conducted. Meanwhile work on the freeway north from Reno was underway, with U.S. 395 completed from Exit 67 (2nd Street / Glendale Avenue) to Exit 72 (North Virginia Street) at Panther Valley. This section opened to traffic in 1973.3

Route Information

  • North End – Reno, NV

  • South End – Carson City, NV

  • Mileage – 35.02 (35.05*)

  • Cities – Carson City, Reno

  • JunctionsI-80

Source: 2019 State Maintained Highways of Nevada, Descriptions and Maps (NDOT)
* – December 31, 2018 Interstate Route Log and Finders List

I-580 Annual Average Daily Traffic (AADT)

Location Vehicles per day
Exits 38 to 39 33,000
Exits 39 to 41 36,000
Exits 41 to 42 33,000
Exits 43 to 44 43,500
Exits 44 to 46 39,000
Exits 46 to 50 39,000
Exits 50 to 56 36,000
Exits 56 to 57A 53,000
Exits 57A to 59 59,000
Exits 59 to 60 86,500
Exits 60 to 61 110,000
Exits 61 to 62 116,000
Exits 63 to 64 134,000
Exits 64 to 65 162,000
Exits 65 to 66 182,000
Exit 67 to I-80 168,000


IR 580 Milepost 28
A milepost incorrectly identified U.S. 395 at Panther Valley as part of Interstate 580. Prior to 2012, the NDOT mileposts were the only indication that U.S. 395 through Reno was also I-580. As is standard in Nevada, these white mileposts indicate the type of route (IR means Interstate), route number (580), mileage (distance north from the county line), and county (WA means Washoe County). The design is the same that Caltrans uses. Photo taken by Mike Ballard (06/98).
Construction for Interstate 580 at Snyder Avenue in south Carson City. Phase 2B-2 construction of the Carson City Freeway included the grade separated crossing at Snyder Avenue. This work was completed from early 2013 to summer of 2013.6 Photo taken 06/21/14.
Despite being unsigned, Interstate 580 appeared on the Rand McNally North American Road atlas throughout the 1980s editions.

The Final EIS for the North-South Freeway was completed in January 1977. Construction followed on the limited access highway from Exit 67 (Glendale Avenue) south to Exit 63 (South Virginia Street). This section opened in 1980.3

A Supplemental EIS for the U.S. 395 freeway leading south from Exit 63 to Winters Ranch (near Exit 50) was conducted from 1979 to 1983. Construction got underway afterwards, with the North-South Freeway completed from Exits 63 to 61 in 1983. The remainder south to Exit 56 (SR 431 / Mt. Rose Highway) was finished in 1998.3

Work on the I-580 Freeway Extension Project, the highway paralleling U.S. 395 to the west from Steamboat south to Pleasant Valley and Washoe City, was underway in 2003.3 Simultaneously to the south, construction on the Carson City Freeway portion of I-580 upgraded a four-lane segment of U.S. 395 to Interstate standards at Lakeview and the Washoe County / Carson City line. Costing over $200 million, ground breaking for Phase 1 of the Carson City Freeway took place in 2000.4

The $555 million I-580 Freeway Extension Project ran through 2012, with the 8.5 mile section, and the 1,700 foot long and 300 foot high Galena Creek cathedral arch bridge, the largest structure of its kind, fully opened to traffic on August 27.5 The Carson City Freeway project opened initially from Lakeview south to U.S. 50 (William Street) on February 16, 2006. The 1.8 mile link south from the SPUI with William Street to Fairview Drive was finished in September 2009.6

The freeway around Carson City was officially dedicated as the Carson City Deputy Sheriff Carl Howell Memorial Freeway in December 2015.4 A six feet tall metal sculpture of an eagle at the south end of the freeway honors the name of Eagle Valley, where Carson City sits. A similar sculpture is located at the north end of the freeway at Arrowhead Drive.7

A community free fun walk, run and ride celebrated the opening of the last leg of the Carson City Freeway on July 22, 2017. The $42.24 million7 section opened to motorists on August 2.

Future work will upgrade the signalized south end of I-580 at the partition with U.S. 50 west to Lake Tahoe and U.S. 395 south to Minden to a single point urban interchange (SPUI). Estimated to cost $20 million or more,7, this work is scheduled for the mid-2020’s as funding becomes available.4,6

Highway Guides

North End I-80 US 395 – Reno, Nevada

Perspective from Interstate 580 & U.S. 395 north
Spanning 2nd Street with seven northbound lanes, Interstate 580 & U.S. 395 make their final approach to Interstate 80 (Exits 68B/A). Photo taken 06/28/14.
A lane drop occurs as I-580 & U.S. 395 cross over the Truckee River and Kietzke Lane (SR 667). Traffic partitions nearby with two lanes departing for Interstate 80 east through Sparks. A subsequent two-lane ramp (Exit 68B) follows for I-80 west to Verdi. Photo taken 06/28/14.
East from I-580 through Sparks, Interstate 80 constitutes a six-lane freeway to Rock Boulevard, with auxiliary lanes accompanying the route to the east Truckee Meadows industrial area. Photo taken 06/28/14.
A two lane loop ramp carries motorists onto Interstate 80 west toward Sacramento, California as part of the turbine style interchange joining the two freeways. I-580 ends as U.S. 395 continues north to Panther Valley, Bordertown and Susanville, California. Photo taken 06/28/14.
Perspective from U.S. 395 south
U.S. 395 leads south one half mile from the parclo interchange (Exit 69) with Oddie Boulevard to the systems interchange with I-80 and the southbound beginning of Interstate 580. Photo taken 06/28/14.
All traffic for Interstate 80 west to Truckee and Sacramento, California and east to Fernley and Elko depart in unison from U.S. 395 (Martin Luther King, Jr. Memorial Highway). Interstate 580 & U.S. 395 shift southeast from Exit 68 to pass east of Downtown Reno and west of Reno / Tahoe International Airport (RNO). Photo taken 06/28/14.
Perspective from Interstate 80 east
Auxiliary lanes in each direction of Interstate 80 expand the freeway to eight overall lanes between Wells Avenue (Exit 14) and Interstate 580 & U.S. 395 (Exit 15). Photo taken 08/04/13.
Traffic partitions with two lanes joining Interstate 580 & U.S. 395 south to Washoe Valley and Carson City and U.S. 395 extending north to Stead and Cold Spring in north Reno. Photo taken 06/28/14.
Interstate 580 accompanies U.S. 395 south through Reno, paralleling Virginia Street (U.S. 395 Business / U.S. 395 Alternate) from near Downtown to Pleasant Valley. The U.S. 395 freeway continues 23 miles north to California 70 at Halellujah Junction. Photo taken 08/04/13.
Historic Perspective from Interstate 80 east
Interstate 80 east at Exit 67 for U.S. 395 and then-unsigned Interstate 580 south. Reconstruction of I-80 added a fourth eastbound lane and sound walls. Photo taken by Chris Elbert (03/19/05).
Non-reflective signs previously partitioned traffic at Exit 15 for U.S. 395. The southbound ramp to I-580 splits here with two lanes initially now, but tapers to one before merging onto U.S. 395 ahead of the Truckee River. Photo taken by Chris Elbert (03/19/05).
Perspective from Interstate 80 west
Interstate 80 shifts northward across the Reno / Sparks city line over 4th Street / Prater Way (Business Loop I-80) just ahead of the turbine style interchange (Exit 15) with Interstate 580 south and U.S. 395 (Martin Luther King, Jr. Memorial Highway). Photo taken 06/28/14.
Exit 15 separates from the I-80 westbound mainline as a distributor roadway, taking commuters from both the freeway and Prater Way below to Interstate 580 and U.S. 395. Photo taken 06/28/14.
With traffic joining the ramp to I-580 and U.S. 395 from Prater Way, a pair of overheads direct motorists south to Reno / Tahoe International Airport (RNO) and the capital city and north to Susanville, county seat of Lassen County, California. Photo taken 06/28/14.

South End US 50 US 395 Business / South Carson Street – Carson City, Nevada

Perspective from Interstate 580-U.S. 395 south & U.S. 50 west
An interchange sequence sign references the south end of the Carson City Freeway, where U.S. 50 west and 395 south split for Lake Tahoe and Minden respectively. This sign stands just north of the Clearview Drive overpass. Photo taken 07/17/17.
Interstate 580 & U.S. 50-395 curves west to pass below Nevada 526 (Snyder Avenue) to U.S. 395 Business (South Carson Street). A SPUI will replace the at-grade intersection with South Carson Street in the future. Photo taken 07/17/17.
U.S. 50 advances from I-580 and U.S. 395 to traverse the Carson Range west to Spooner Junction (SR 28) and Lake Tahoe. U.S. 395 overtakes South Carson Street from U.S. 395 Business along an arterial route to Douglas County and Carson Valley. Photo taken 07/17/17.
Perspective from U.S. 50 east
U.S. 50 lowers from the Carson Range along an expressway extending east from Spooner Junction to tie into Interstate 580 (Carson City Freeway) directly at U.S. 395 (South Carson Street). Photo taken 07/17/17.
U.S. 395 enters Carson City and Eagle Valley from Gardnerville and Minden in the south Carson Valley. U.S. 395 Business follows the pre-freeway route (Carson Street) north to the State Capitol and Downtown Carson City. Photo taken 07/17/17.
Perspective from U.S. 395 north
U.S. 395 heads north from Topsy Lane to enter the Carson City limits just ahead of Clear Creek Road, U.S. 50 west and Interstate 580 north. Photo taken 07/17/17.
An east side frontage road serves a mobile home park and storage facility while big box retail lines the west side of U.S. 395 to the at-grade intersection with U.S. 50 west to Lake Tahoe and Interstate 580 (Carson City Freeway) north to Reno. Photo taken 07/17/17.
U.S. 50 east & 395 north overlap with I-580 north to bypass Carson City as Carson Street becomes U.S. 395 Business north to Downtown. AASHTO approved a Nevada application to designate U.S. 50 Business along South Carson Street and William Street on May 15, 2009. However NDOT never signed the bannered route. Photo taken 07/17/17.
Perspective from U.S. 395 Business (South Carson Street) south
South Carson Street comprises a six-lane commercial arterial from Fairview Drive (former Temporary U.S. 50) to Interstate 580, U.S. 50 and U.S. 395. Photo taken 07/17/17.
A left-hand turn lane joins the south end of U.S. 395 Business (South Carson Street) with the northbound beginning of I-580. U.S. 50 east & 395 north overlap with the Carson City Freeway to bypass Downtown. Photo taken 07/17/17.


  1. Billeci, Dave. Personal Email, “A I-580 NEVADA FACTOID” from March 23, 2006.
  2. Spring 2012 Applications for AASHTO Special Committee on Route Numbering.
  3. Project History and Overview, I-580 Extension Project web site.
  4. "Community invited to fun run/walk event to celebrate Carson City freeway opening." Northern Nevada Business Weekly, July 6, 2017.
  5. "Work nears completion on Reno-Carson freeway." Associated Press State Wire: Nevada (NV), May 29, 2012.
  6. Nevada Department of Transportation : I-580 / U.S. 395, NDOT project web site.
  7. "Carson City Bypass to open first week in August." Nevada Appeal (Carson City, NV), June 17, 2017.
  8. "New freeway to save drivers time in Carson City." KOLO 8 (Carson City, NV), August 2, 2017.

Page updated August 5, 2017.