After some digging around, we've recovered the GIS files for the NolaCycle map (current as of April 1, 2010). I've posted these, and some other documents people might find informative, online at https://sites.google.com/a/nolacycle.com/nolacycle-files/. Graduate students, planner, and bicycle advocates, please feel free to use these documents to help you with your projects. If anyone is interested in using our data for a commercial project, such as a mobile app, please email me at lauren(at)nolacycle.com for special permission, as I would require you to make some donations to local bicycle organizations in exchange.
We're working on getting some things fixed on the NolaCycle Map site so we can download the database again to use the updated information (though it's not very current either). If anyone is interested in a login to the NolaCycle map site to do updates in their neighborhood, let us know.
Crowd-sourced bicycle mapping has come a long way since NolaCycle started in 2008. If you're interested in checking out some cool new projects that harness the power of smartphones, look into Hit the Pothole and CycleTracks.
If you'd like an up-to-date map of official bicycle routes in New Orleans, Bike Easy's Bike Map and Guide to Safe Cycling is available online as a PDF.
Thanks for all your help and support over the years!