California State Route 190 California State Route 190 State Route 190 (SR 190) is a state highway in the U.S. state of California that is split into two parts by the Sierra Nevada. The western portion begins at Tipton at a junction with State Route 99 and heads east towards Porterville before ending at Quaking Aspen in the Sequoia National Forest. The eastern portion begins at US 395 at Olancha, heads east through Death Valley National Park, and ends at State Route 127 at Death Valley Junction. The 43.0-mile (69.2 km) portion over the Sierra Nevada remains unconstructed, and the California Department of Transportation
Death Valley Railroad train ran per day bringing food and water to the workers at the Ryan mine, and bought ore back late in the afternoon. After better deposits of borax were discovered at Boron, the Death Valley Railroad tried to resort to tourist operations by bringing in a Brill railcar to transport tourists to the old mines. Due to a lack of profit from tourists and freight trains and the closure of the mines, the railroad closed in 1931. Much of the railroad ran parallel to what is today State Route 190. After this railroad ceased operations, the United States Potash Company