Yep - I've done a modified dam loop from that climb - the road ends at Bee Caves near 360 (near where that cyclist was killed on Monday, so be extra mindful of traffic). I do the Mnt. Bonnell/Scenic drive route we've talked about before down to Lake Austin. Then Red Bud - after that I do a normal dam loop. It adds some climbing to route I think, but not a lot of overall distance. Plus it sure is perty! The first section up from the dam really hurts. I think all the way from the dam to Bee Caves there's a couple miles worth of climbing.