[5] MS 555 is legally defined in Mississippi Code § 65-3-3,[6] as part of the state highway system.

[3] MS 555 then travels northwestward to its intersection with Dr. Martin Luther King Jr. Street and turns northward.

The road intersects multiple driveways, leaving Natchez as Dr. Martin Luther King Street.

[3] Past the intersection at Thornburg Lake Road,[5] the route ends at the legally defined terminus at the old Pine Ridge School.

[11][12] MS 555 was designated two years later, after a new road was created, connecting from Natchez to northern Adams County.

[18][19] The southern reappeared on the 1974 map, but no longer state maintained, along with the segment north of MS 554.

[20][21] In 1998, the northern segment was truncated to Church Hill Road,[22][23] but the legally designated terminus remain unchanged.