Way Back When: From the Opening Program of the Golden Gate Bridge Fiesta, May 27, 1937
Note that you had to push a bike, not ride it. Skateboards, now prohibited, had not been invented yet and were not to reach Marin until about 1965. Roller Skates (now forbidden) were also not yet taboo.
How much is that 50 cent toll from 1937 worth in 2010 dollars, adjusted for inflation? Accordng to the US Bureau of Labor Statistics, it's worth $7.56, making our $6.00 toll feel at least a little bit better.