The Nevada Department of Transportation is reminding drivers that northbound Interstate 580 lanes have now been shifted and reduced directly south of the spaghetti bowl as NDOT launches the Spaghetti Bowl Xpress project. Additional overnight lane closures are also being announced. Through December, northbound I-580 lanes are split as crews replace aging interstate concrete. The existing interstate lanes are reduced between Mill Street and the spaghetti bowl 24-hours-a-day, seven days a week.