The most prominent of these Pedro Mountain roads was Coastside Boulevard which remains in use today as part of the trail network of McNee Ranch State Park .
Coastside Boulevard is the 1914 to 1937 coastal highway 57 .
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 .