Overnight ramp and single lane closures will take place beginning tonight, as part of finishing construction of a, NDOT project to replace aging roadway surface on I-580 and U.S. 395 near the Reno spaghetti bowl. Through early June, overnight ramp closures and lane reductions will take place on both directions on I-580/U.S. 395 between Mill Street and Parr Boulevard primarily between 9 p.m.-5 a.m. Sunday evenings through Thursday mornings. At least one interstate lane will remain available in each direction. Highway speed limits will be reduced to 55 mph during daytime hours and 45 mph during active construction.