It was quite windy yesterday. If the wind is blowing heed the signs that say to use the left lane going across the bridge. Wind was horrible from Alamo Nv to Winslow Az.
The only portion of going from Vegas on the 93 is the downhill, and up hills around Boulder City, Hoover Dam area. Other then that is a nice smooth road.
If you have not already done so, on 93, take exit 2 (hwy 172) Hover Dam Access RD. In about 2 miles you will come to a parking area. You can park here and walk across the new bridge. You get a great view of the Dam. Map Link