U.S. 395 was rebuilt on a new alignment on the ascent to Sherwin Summit and around Crowley Lake. Unlike the highway relocation in southern California, the old alignments have been renamed, now called Lower Rock Creek Road, Old Sherwin Grade, and Crowley Creek Road; not Sierra Highway. From here to Lake Tahoe, the highway crosses mountainous terrain inside the Sierra Nevada, giving the highway its name. While in the Sierra Nevada, the road passes by attractions such as Mammoth Mountain, Yosemite National Park and Mono Lake. El Camino Sierra separates from U.S. 395, just prior to the Nevada state line at Topaz Lake, following SR 89. This is the only portion of the route not used year-round, as Caltrans closes Route 89 over Monitor Pass during winter months. Motorists destined for Lake Tahoe during the winter closures can continue along US 395 into Nevada, and return to California via Nevada State Route 88 or Nevada State Route 207.