When snow chains are required on the summit, Caltrans often establishes chain control in Twin Bridges. This is likely because of very limited availability of shoulders where chains can be installed on summit approaches.
The former ski area Edelweiss was just above Twin Bridges on US-50, at what is now called Camp Sacramento. It was the home hill for future Olympianski racerSpider Sabich. He was raised in Kyburz, twelve miles (20 km) west, in the 1950s and early 1960s.
The population is 100% white; 50% male, 50% female. The average household size is 2 and the average family size is 2.2. There are 125 housing units which are largely unoccupied vacation homes. 100% of the population speaks the English language.