By Cathy Locke and Matt Kawahara
The collapse brought down the park's landmark ride, the 165-foot-tall Scandia Screamer, which gives people a bird's eye view of the area and flips riders as it spins around.
The ride was not in operation. There was a maintenance project under way.
Assistant Fire Chief Scott Cockrum of the Sacramento Metropolitan Fire District said firefighters were dispatched center about 4:30 p.m.
They found that the crane, which was being used to remove a portion of a ride, had collapsed, bringing part of the ride structure down with it. Cockrum said one worker rode the falling crane to the ground, but another worker was left stranded on a structure about 70 feet above the ground.
The fire department was able to use an aerial truck to rescue the stranded worker.
Assistant Fire Chief Dale Turner said one worker suffered injuries to his lower extremities and the other suffered from exhaustion. Both were taken by ambulance to Mercy San Juan Medical Center.
The center was open to the public at the time of the collapse, but no one on the ground was injured.
The collapsed crane and ride structure appeared to have fallen across a portion of the miniature golf course, and a carriage from the ride was leaning against a batting cage.
Turner said the crane was being used to remove an arm from the ride, which has carriages at either end. Workers were unbolting the arm and when the final bolt was removed, the weight of the arm was transferred to the crane, causing it to topple over.
Because the crane collapse is an industrial accident, it will be investigated by Cal OSHA.
The Scandia Screamer was installed in March 2007. According to the park, the Screamer whips passengers 165 feet into the air and then sends them on a 65 mph, 3.5 G-force loop down toward Interstate 80.
Photo by Randy Pench: A crane collapses at Scandia amusement park off Interstate 80 in North Highlands area of Sacramento on Tuesday, August 30, 2011, bringing down the park's landmark ride, the 165-foot-tall Scandia Screamer. The ride was not in operation. Two crane operators were taken away by ambulance.
Bee file video: Scandia Screamer