I-140 is a spur route in Wilmington that bypasses US 17 and forms a partial loop in the city. I-240 loops around downtown Asheville and the districts in the city. I-440 serves as much of the inner loop in the Raleigh, while I-540 serves as an outer loop in the Raleigh area, also bypassing the suburbs. I-840 serves as part of the north portion of the Greensboro Urban Loop.
