"Route 121 is a short highway in Clinton County, Missouri. It begins at U.S. Route 69 (US 69) south of Cameron and ends at Wallace State Park where the road becomes Route HH. It served as a connector between US 69 and the state park since 1935."@en . . "2024.55"^^ . . "West" . "MO" . "121" . "East" . .