If you are planning to travel from Phoenix up to I-40 and north and are thinking about taking Highway 87 between Mesa and Payson, the highway is restricted to a maximum width of 12 feet. At the point of the landslide, both lanes are diverted to the northbound lanes, one way in each direction. The speed limit for the two-mile construction zone is 45 mph.
A landslide covered most of the southbound lanes and also severely moved and buckled them. For an aerial shot of the site see Payson's Rim Country Web site. For those interested in the geology of the landslide, this is a good site with lots of photos.
HIghway 87 is very scenic, especially now with Mexican poppies in bloom. It does have some major grades but then so do the alternate routes. Interstate 17 is the best alternative, though I wouldn't hit it at rush hour during the week since construction north of Phoenix is slowing traffic.
Jaimie Hall Bruzenak