Last night GM finally had a chance to ride on some of the stretches of the completed construction on P St. And he can happily report that the new cobblestones a incredibly smooth and very bikeable.
Prior to the constructions, O and P Streets west of Wisconsin were basically a no-go zone for bikes. You could ride on the cobblestone (or more accurately: the Belgian blocks) but it was really uncomfortable and, between the blocks, the patches and the tracks themselves, not terribly safe either. And it was technically illegal too since there was a sign saying not bikes.
But the newly placed blocks are fully flush, and riding over them on a bike is no more bouncy than riding on a dirt path. This is a great improvement for bikers, who either had to brave the rough conditions or bike out of the way. Hopefully with the conditions so improved, DDOT will take down the no-longer-necessary no bikes sign.