Arizona. The majority of I-40 BL was retired to the city of Kingman in 2002, with two sections, each less than a mile long, remaining under ADOT ownership at I-40 exits 48 and 53 respectively. On September 18, 2009, the I-40 BL designation was decommissioned. The two remaining segments owned by ADOT became a minor southwestern extension of SR 66 and a new route designated US 93 Spur. US 93 Spur begins at an intersection with I-40 and US 93 at Beale Street and I-40 exit 48. The unsigned spur route continues west on Beale Street, ending about three blocks east of I-40 and US 93 at an intersection with "Route 66", Grandview Avenue and Beale Street in front of Locomotive Park. Major intersections References External links 93 Arizona Transportation in Maricopa County, Arizona Transportation in Yavapai County, Arizona Transportation in Mohave County, Arizona