Sounds like an occasion for urban cyclocross. Dismount and carry that thing until it's safe to ride again.

My commute to and from physical therapy has a 400 yard stretch that's pretty stressful. Some minor hill-type objects -- just highway overpasses to sprint over. But the merging lanes with two highways make it a mad dash, head on swivel and finger ready to offer half of the Vulcan salute -- the implied message, reading between the lines.