Mo. Rev. Stat. § 227.798: Rev Dr Martin Luther King Jr memorial highway designated for a portion of Pine Street in Poplar Bluff.

The portion of Pine Street (Business 60) from North Westwood Boulevard (Business 67) continuing to B Street within the city of Poplar Bluff in Butler County shall be designated the "Rev Dr Martin Luther King Jr Memorial Highway". The department of transportation shall erect and maintain appropriate signs designating such highway, with the costs to be paid by private donations.