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State Route 18 in the U.S. State of California currently runs from State Route 210 in San Bernardino to State Route 138 near Adelanto. It is the primary route into the San Bernardino Mountains and has two discontinunities.
Route description Route 18 currently begins at State Route 210 (which as of January 2005 is signed as State Route 30) and quickly enters the San Bernardino Mountains as a four-lane expressway. The route climbs north at a gentle grade until it turns east, where it begins to offer panoramic views of San Bernardino and the Inland Empire. Hence, this portion of Route 18 is known as the Rim of the World Highway. After meeting State Route 138 at Crestline, the expressway reverts to a two-lane mountain road. It meets two other highways, State Route 189 just east of Arrowhead Highlands and State Route 173 in Lake Arrowhead, before running over State Route 330 in Running Springs. Route 18 continues through several valleys and near ski resorts before reaching a summit. At that point, Route 18 again runs along a lengthy mountain ridge, offering more spectacular scenery at an even higher elevation. At State Route 38, Route 18 jogs across a dam and travels along the south shores of Big Bear Lake. After going through the City of Big Bear Lake, it is reverse-multiplexed with Route 38 and moves to the other side of the valley before it descends from the mountains to the desert on the other side, heading east and then north. In Lucerne Valley, Route 18 intersects with State Route 247 and then turns west, becoming an expressway (Happy Trails Highway) through Apple Valley. It is multiplexed with Interstate 15 for a few miles south before taking off across the desert, meeting U.S. Highway 395 in Adelanto, and ending at California State Highway 138. Route 18 thus takes an unusual path in the shape of a question mark. State law Legal Definition of Route 18: California Streets and Highways Code, Chapter 2, Article 3, Section 318 | |||||||||||||||||||||||||||||||
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