17. The Bureau of Public Roads surveyed the route for a potential connection between the Carbon River and Nisqually entrances to Mount Rainier National Park in the 1920s, but did not fund its construction. In 1937, State Road 5 was renamed Primary State Highway 5, and what is now SR 165 was the Enumclaw-Fairfax branch of that highway (except between Enumclaw and Buckley, which is now SR 410). The road to Mowich lake was completed in 1933, but remained closed to vehicular traffic until 1955. When the current highway numbering system was developed with the 1964 renumbering, the highway became State Route 165. Major intersections References 165 Transportation in Pierce County, Washington