What are the visitation rights of grandparents in the state of missouri?

The Missouri court may order grandparent visitation under specific circumstances
Missouri law supports contact between grandparent and grandchild while attempting to encourage parents to resolve family disputes without court intervention. In an attempt to balance these two interests Missouri law permits grandparent visitation only in limited situations. There is no guaranteed right for a grandparent to have visitation with a grandchild. Go to this site for more information. I live in Michigan and there are no grandparent rights. Good Luck.
http://www.yourchild1st.com/artman/publish/article_12.shtml

Grandparents in the state of Missouri may intervene in a divorce suit to request visitation. Outside of a divorce suit, the grandparents must have been denied visitation. Grandparents who have been denied visitation can file a petition in the following cases:

•The parents are divorced
•One parent is deceased and the other denied visitation
•The grandparent has been "unreasonably" denied visitation for 90 days or more.
However, if the natural parents are legally married to each other and are living together with the child, a grandparent may not file for visitation under this provision.

Missouri law favors what are sometimes called intact families by stating that if the child's natural parents are legally married and living with the child, they know what is in the best interest of the child. This provision is what as known as a "rebuttable presumption," meaning that in the instance of denied visitation, grandparents will have the burden of proving that it is not true. As in all states, courts are instructed to consider the child's best interest. Missouri statutes allow the court to appoint a guardian ad litem, order a home study or consult with the child in order to determine the child's best interest.

Adoption puts an end to grandparents rights unless the adopting party is a stepparent, a grandparent or a blood relative.

See Missouri statutes