Work continues on the Nevada Department of Transportation (NDOT) projects at Lake Tahoe on SR-28 and SR-431. Drivers can expect up to 30-minute delay times. All work is weather and temperature permitting, and subject to change. MARLETTE CREEK (SR-28): Beginning Monday, July 18 working hours are Monday – Fridays, daytime only, from 7 a.m. to 5 p.m.