California State Route 83 1.35

State Route 83, also or primarily known as Euclid Avenue, is a city street in the U.S. state of California. Officially, SR 83 runs from the Chino Valley Freeway in Chino Hills north to the San Bernardino Freeway in Upland. Euclid Avenue then continues north through Upland to the unincorporated community of San Antonio Heights.Euclid Avenue passes through several historic districts. A segment of the road is listed on the National Register of Historic Places.Route descriptionThis route is part of the California Freeway and Expressway System.Route 83 is a major north - south arterial serving the cities and communities of Western San Bernardino County. Known as Euclid Avenue for its entire 14-mile (23 km) length, the route begins at its southern terminus at the Chino Valley Freeway (State Route 71) and traverses the communities of Chino, Ontario, and Upland before reaching its northern terminus at the San Bernardino Freeway (Interstate 10). Euclid Avenue, as a city street in Upland, and later a county road in unincorporated San Bernardino County, then continues north into the unincorporated community of San Antonio Heights and provides direct access to Mount Baldy.