I asked John Mermin at Metro if they would be willing to share their data with the project, and below is the response I got. Expect much more complete bike data in Metro, Oregon soon.

From: John Mermin
To: Paul Johnson
Subject: RE: GIS data for Bike There!
Date: 02/04/2010 09:18:12 AM

Hi Paul,
Thanks for the message. It's very likely that the answer will be yes. I'm meeting with a few folks at Metro early next week, and one of the issues we'll be discusisng is Metro's role for providing bike data / maps for the region. Both myself and our cartographer are very supportive of sharing our data for open-source projects.

I should have more to say after our meeting on Tuesday.
Thanks!
John