If you are planning to use 89 north for your Shark Week III access to Utah, expect a two plus hour detour. The work to repair the damage to the road has not even begun. Geologists are still trying to determine what caused the road to drop in some places 12 ft. A friend of mine travels the area often and is a SAR for the north rim of the Grand Canyon. He said he would not recommend the detour for bikes. H said it was rough enough with his truck. So you might want to Check in with AZDOT, and or AZDFG.