At approximately 1950 Pacific time, a Cessna 441 suffered a collapsed right main gear during the landing roll at Rogue Valley International Airport. The pilot and three passengers were not injured. The pilot said the gear retraction after takeoff from Lake Tahoe Airport did not feel normal and it appeared as though the gear cycle did not end. He re-cycled the gear and noted that both the gear transition light and the hydraulic light failed to extinguish at the end of the cycle. He pulled the landing gear circuit breaker to turn the hydraulic pump off. Passengers visually confirmed that the right main gear was not retracted. Prior to landing the pilot observed three green lights on the gear position indicator. Post-accident inspection found the right main gear trunnion roll pin had sheared.