If you are living in Herndon, you should be made aware of the bike lockers at Herndon-Monroe PnR.

http://www.bikeforums.net/showthread...ight=eibeinaka

The 5A metrobus goes from Herndon-Monroe into DC (L'Enfant Plaza, via a stop in Rosslyn), and has a bike rack on the front. Possible to cycle one way and bike from/to Herndon-Monroe PnR.