Ok, no one really likes chip seal roads. They are cheaper to maintain for the city and county but can really get on your nerves (literally) when riding. To give Boulder County credit, they recognize how much we dislike the surface and at least use a much smaller aggregate and they say they will sweep and fog immediately afterwards.
From the county’s website:
2012 Chip Seal Schedule
Week of June 11
Week of June 18
Week of June 25
Week of July 2
It usually takes a couple months or sometimes even a full season until the surface completely seals and starts to feel smooth again. On the plus side potholes, cracks, and other road hazards will be greatly reduced.
Loose chip can be messy and even dangerous. It is strongly advised to avoid these roads for a couple weeks after they’ve been chip sealed. The Boulder County website has some more information and may have more up to date information on the progress of these projects.