整个1号公路的标示名称为“蓝星纪念公路(Blue Star Memorial Highway)”以纪念美国军队的贡献。在南加州,1号公路介于达纳角的5号州际公路和奥克斯纳德的101号美国国道之间的部分被官方称作“太平洋海岸公路(Pacific Coast Highway)”,并经常使用其英文缩写“PCH”。从比尔顿以南8英里处的交流道到皮斯摩海滩的路段,以及圣路易斯-奥比斯保至湾区280号州际公路的路段,则被标注为“卡布里约公路(Cabrillo Highway)”,此名称是纪念葡萄牙探险家胡安·罗德里格斯·卡布里约(Juan Rodríguez Cabrillo)。此外,其他一些路段则由州或地方赋予了不同的名字。[7]
大苏尔的56号公共路段是在1939年并入州级公路系统的,并被改标注为1号公路。该路段在1965年倍纳入第一批州级景观公路(State Scenic Highway)系统。1966年,当时的美国第一夫人小瓢蟲·約翰遜在比克斯比溪大桥出席了此事件的官方庆典。[23]后来,该路段被美国政府纳入全美风景道路系统(All American Road)。[13]
最初在洛克波特和芬代尔之间通过修筑桥梁以填补公路缺口的计划最终被放弃。这主要是由于那里的道路十分陡峭,工程难度很大,造成修建成本非常昂贵。[29]1984年,这两个地方直接的公路在改道后开建。[30]该区域海岸附近的部分如今大多属于辛克杨荒野州立公园(Sinkyone Wilderness State Park)和金山脉国家保护区(King Range National Conservation Area)。
^Jupiter Entertainment. Pacific Coast Highway. Modern Marvels. 2004. The History Channel.
^California State Assembly. Forty-第六 Session of the Legislature. Forty-第六 Session of the Legislature. Statutes of California. State of California. Ch. 309 p. 508. 1925.
^California State Assembly. Forty-第九 Session of the Legislature. Forty-第九 Session of the Legislature. Statutes of California. State of California. Ch. 82 p. 103. 1931.
^California State Assembly. Fiftieth Session of the Legislature. Fiftieth Session of the Legislature. Statutes of California. State of California. Ch. 767 p. 2034-2039. 1933.: "Ferndale to State Highway Route 1 near Fernbridge." "Russian River near Jenner to Westport." "State Highway near southerly end of Marin Peninsula to the Marin-Sonoma County line via the Coast Route." "Santa Cruz to San Francisco via Coast." "State Highway Route 56 near Carmel to Santa Cruz." "State Highway Route 2 near Las Cruces via Lompoc and Guadalupe to State Highway Route 2 near Pismo."
^California State Assembly. Fifty-第一 Session of the Legislature. Fifty-第一 Session of the Legislature. Statutes of California. State of California. Ch. 29 p. 279. 1935.: "Route 56 is from: (a) Route 2 near Los (原文如此) Cruces via Lompoc and Guadalupe to Route 2 near Pismo. (b) San Luis Obispo to San Francisco along the coast via Cambria, San Simeon, Carmel, and Santa Cruz. (c) State Highway near southerly end of Marin Peninsula to the Marin-Sonoma County line via the Coast Route. (d) Russian River near Jenner to Westport. (e) Ferndale to Route 1 near Fernbridge." "Route 60 is from Route 2 near El Rio via Oxnard to Route 2 south of San Juan Capistrano."
^Pavlik, Robert C. Historical Overview of the Carmel to San Simeon Highway(PDF). Historic Resource Evaluation Report on the Rock Retaining Walls, Parapets, Culvert Headwalls and Drinking Fountains along the Carmel to San Simeon Highway. California Department of Transportation. November 1996 [December 17, 2011]. (原始内容存档(PDF)于2016-12-26).
^California State Assembly. 1951 Session of the Legislature. 1951 Session of the Legislature. Statutes of California. State of California. Ch. 1588 p. 3585. 1951.
^California State Assembly. 1963 Session of the Legislature. 1963 Session of the Legislature. Statutes of California. State of California. Ch. 385 p. 1171, 1186. 1963.
^California State Assembly. 1983–1984 Session of the Legislature. 1983–1984 Session of the Legislature. Statutes of California. State of California. Ch. 409 p. 1769, 1774. 1984.