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Pedro Mountain Road
Pedro Mountain Road describes a series of historical road crossings of Pedro Mountain, a promontory ridge located between Montara Mountain and the coastal cliffs of Devil's Slide in San Mateo County, California. This Pedro Mountain headland blocks the easy passage of coastal travelers between the Pedro Valley in Pacifica, California and Montara, California. The most prominent of these Pedro Mountain roads was Coastside Boulevard, the 1914 to 1937 coastal highway 57, which remains in use today as part of the trail network of McNee Ranch State Park.
==History==
The first historical record of the road crossing Pedro Mountain was in the journal of the Portola Expedition, October 1769. ''"...on a very bad road up over a high mountain...though easily climbed on the way up, had a very hard abrupt descent on the opposite side."'' This routing today is known as Indian Trail, running up from Martini Creek, over Saddle Pass and down the ridge into the present day Willow Brook Estates in the Linda Mar district of Pacifica. From 1848 until 1879 the routing, known as Road Trail, was changed to run east and west along the ridge of Pedro Mountain from Saddle Pass turning north and descending the ridge above Adobe Drive and on towards the Sanchez Adobe. From 1879 to 1914 the routing was changed entirely, called the Half Moon Bay - Colma Road, and transversed over the mountain closer to the ocean on very steep and rutted switchbacks from above the Shamrock Ranch towards Martini Creek. The steepest sections of this routing were virtually impassible to automobiles, with a grading of 24%. The road was paved with concrete in 1913. From October 31, 1915 to June 1937 another new (paved) routing, called Coastside Boulevard (Highway 57) was routed up from Higgins Road in Pacifica, rising back towards Saddle Pass, and was welcomed as a much more automobile accessible routing. Remnants of this road are still passable to hikers, mountain bikers and horses and in the present day is called the 'Old Pedro Mountain Road'.〔VanderWerf, Barbara 1994. ''Montara Mountain''. Gum Tree Lane Books, Granada, CA.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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