Rocky Mountain Construction

Rocky Mountain Construction (RMC) is an American roller coaster manufacturing and construction company based in Hayden, Idaho, United States. It is best known for its I-Box track and Topper Track for wooden roller coasters. Founded by Fred Grubb and Suanne Dedmon in 2001, it has built over 20 roller coasters. In 2023, it merged with amusement ride manufacturer Larson International.