Good for you for trying at least. Maybe a local bicycle advocacy group could help? It might also help to document the bad conditions (photos, etc.) and ask others beyond your co-workers to complain? Signs are a cop-out unless there are improvements to go with them.

I sort of like being a squeaky wheel though.

I recently had a meeting with some folks here about a cool new system they developed to give you directions by bike throughout the city (Boulder, CO) like so many sites do for cars. I sent some comments and was surprised that they wanted my feedback and even more surprised that they were so enthusiastic about fixing the things I wanted changed. I pointed out some routes that go way out of the way, and the guy I met with wrote me yesterday and said he'd been riding around and investigating how to best add in a key road that wasn't included. Then, I mentioned that I commuted to a neighboring city and would like to see them add their data. Lo and behold, I got invited to a meeting with people from both cities trying to do just that. Very cool! I feel really lucky, especially now that I've read that your city officials were so much less than helpful.

Anyhow, I hope that they eventually clean things up, it sounds like a dangerous place to ride!

Anne