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Washoe County is expected to see an increase of over 147,000 people over the next 20 years. The area is seeing a welcome influx of more commercial and industrial enterprises. The Nevada Department of Transportation (NDOT), in preparation for continued population growth, is improving portions along Interstate 80, Interstate 580, and U.S. 395, with particular attention to the I-80/I-580 Interchange, also known as the Spaghetti Bowl. In addition to these improvements, future traffic projections will be analyzed and infrastructure needs will be identified to take the Reno-Sparks area through the year 2040.

Spaghetti Bowl improvements include short, mid and long-range projects. Long-range projects may include the widening of the freeway and interchange ramps to accommodate increased traffic volumes.

Final Environmental Statement (EIS)

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This early action project, Spaghetti Bowl Xpress, serves as phase one of the Nevada Department of Transportation’s (NDOT’s) Spaghetti Bowl Project, and addresses the areas most critical for safety within the Spaghetti Bowl system-to-system interchange. With the proposed Spaghetti Bowl Xpress improvements shared below, eastbound I-80 backups approaching the exit to I-580/U.S. 395 should be greatly reduced or eliminated, and southbound I-580/U.S. 395 backups at the Spaghetti Bowl should be eliminated. Overall, freeway safety in general should improve.

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Please note: Phase 1 will not be relocating any homes.
Updated SBX Schedule Coming Soon.

Overview

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Maps

Documents

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SBX Project Update June 5, 2025

Spaghetti Bowl Express (SBX) project design is in process.

June 5, 2025

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Drivers will see periodic single lane closures on local roads near Interstate 580

April 24, 2025

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Drivers will see temporary interstate shoulder and single lane closures

March 2, 2025

SBX Project Update February 2025

In November 2025 the Nevada Department of Transportation Board of Directors approved an unsolicited proposal to design and build SBX. A design build contract was approved in December 2025 with Ames Q&D Constructors, continuing momentum on these vital safety and capacity improvements. Key Preliminary Dates...

February 1, 2025

SBX Project Update January 2025

Safety, Congestion and Community Improvements Add a lane to eastbound exit from I-80 to I-580/U.S. 395 southbound. Add lanes and shoulders on I-580 southbound from I-80 to Vassar Street. Restripe Wells Avenue to I-80 eastbound on-ramp increasing lanes to I-580 southbound. Separate ramps for access...

January 1, 2025