a project that might have otherwise taken more than a year. In addition to pavement, right-of-way and fencing to separate the road from the local livestock population were required. The improved road opened to traffic on August 29, 2013. Plans called for the road to be used for three years before the road reverted to Bureau of Indian Affairs jurisdiction. Initially, the route lacked proper fencing, cattle guards, and pavement markings to support safe travel at higher speeds. As a result, US 89T was open to local traffic only at night, and posted speed limits as low as . As of October 15, US 89T restrictions were lifted following the installation of upgraded control features. With the reopening of mainline US 89 in March 2015, the US 89T designation was retired and ownership of the route returned to the Navajo Nation in April 2015. The route from The Gap to SR 98 is currently designated only as N20. Major intersections See also U.S. Route 89A Arizona State Route 89 Arizona State Route 89A References Further reading External links US 89 Landslide at ADOT 89 Arizona Transportation in Coconino County, Arizona