Business Loop I-40 - Holbrook

Interstate 40 travels across the city of Holbrook between the Downtown area and northern reaches of the city. Three interchanges serve the Navajo County seat, all with Business Loop I-40. The western portion of the route overlaps with U.S. 180 along Hopi Street (old U.S. 66) east to SR 77 in the city center. U.S. 180 combines with SR 77 south briefly before parting ways to Petrified Forest National Park and Snowflake respectively.

SR 77 joins the business route along Navajo Boulevard north to Exit 286, where the 5.09 mile long state maintained portion of Business Loop I-40 ends. The remainder of Business Loop I-40 (Navajo Boulevard) northeast to Holbrook Municipal Airport (HBK) and Exit 289 is locally maintained.