Sunday morning a few us rode out from Ashburn, VA to Harpers Ferry, WV. My friend had noticed some creaking when he was out of the saddle. It sounded like the bottom bracket to me, but he thought it was the bars. Sure enough, at the bottom of the descent to the Potomac before crossing into Maryland at Brunswick, his right bar snapped. Not completely detached, but hanging at a 45 degree angle. Luckily, he had just pulled to a stop at the red light at the one lane bridge over the river, so he didn't go down. But what a close call. So check those bars, early and often.