The San Francisco Municipal Transportation Authority recently released its 2010 report on bicycle ridership in San Francisco (The City of San Francisco 2010 Bicycle Count Report). I read an item about it Friday in the Chronicle and was interested enough to seek out the complete document. The report tabulates bicycle use by observation at a number of locations throughout the city. I used their numbers to create the following infographic: 

According to the report, the intersection of 11th and Market Street has the most bicycle traffic on a day to day basis — a 50% increase since 2006. In addition, the report shows a 28% increase in people commuting to work by bicycle between 2006 and 2009. For this year, 72% of all riders are male and 28% are female, a 3% increase from 2006 when females accounted for 25% of all bicycle riders in San Francisco.