Mo. Rev. Stat. § 245.420
In case any person or corporation owning or operating any such railroad as mentioned in section 245.415 shall fail to continue and connect any such levee constructed by the abutting landowner within ninety days after receiving written notice to do so, and after the landowner's levee has been constructed and completed to the right-of-way of the railroad for a period of twenty days, then the landowner shall have the right to enter upon the right-of-way of such railroad for the purpose of continuing and constructing the said levee over and across the right-of-way to a connection with the railroad track or grade. And such landowner having so continued and constructed such levee across said right-of-way to the railroad track or grade as above provided may recover by suit against the person or company owning or operating the said railroad the full amount of the actual cost of so continuing and constructing the said levee on and across the right-of-way of the railroad, together with interest thereon and costs, which costs shall include attorney fee for plaintiff in the sum of twenty-five dollars.
§ 245.420, RSMo