Route information | ||||
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Auxiliary route of I-80 | ||||
Maintained by NDOT | ||||
Length | 35.019 mi[1] (56.358 km) | |||
Existed | October 27, 1978–present | |||
History | Number approved on October 27, 1978; constructed in phases 1964–2017; signed in 2012 | |||
NHS | Entire route | |||
Major junctions | ||||
South end | US 50 / US 395 / US 395 Bus. in Carson City | |||
US 50 in Carson City | ||||
North end | I-80 / US 395 in Reno | |||
Location | ||||
Country | United States | |||
State | Nevada | |||
Counties | City of Carson City, Washoe | |||
Highway system | ||||
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Interstate 580 (I-580) is a 35.019-mile (56.358 km) auxiliary Interstate Highway in Western Nevada. It runs concurrently with US Route 395 (US 395) from an intersection with US 50 near the southern boundary of Carson City to the Reno Spaghetti Bowl interchange with I-80 in Reno. The freeway provides a high-speed direct route between Lake Tahoe and Carson City to Reno and I-80.
Construction on a freeway between Carson City and Reno was planned since 1956, but construction did not occur until 1964. The freeway opened in sections, with the final section opening on August 2, 2017. The I-580 designation was approved on October 27, 1978, but the freeway was not signed as such until the portion between Reno and Carson City was completed following the opening of the Galena Creek Bridge in late August 2012.