1930s
2020s | 2010s | 2000s | 1990s | 1980s | 1970s | 1960s | 1950s | 1940s | 1930s | 1920s | 1910s | 1900s | 1890s
1937
State Route 1, also known as the Pacific Coast Highway, was completed and served as an important tourist and commercial corridor. This is was California's first complete north-south highway.
1936
The San Francisco–Oakland Bay Bridge opened to traffic. The bridge represented a remarkable engineering and political achievement.
1934
The state sign route numbering system was adopted.