Update 7:45 p.m.
All lanes of southbound Interstate 680 in Danville are now clear after glass and debris on the roadway backed up traffic during the evening commute.
The debris was located near the El Pintado exit clogged traffic back through Walnut Creek.
If you got caught in the traffic mess, let us know in the comments, but only when you can safely do so. Don't type and drive.
If you have photos, please send those, too. Again, only when it's safe to do so.