On March 25 , 1993 , the magnitude 5.6 Scotts Mills earthquake damaged the dome , requiring closure for repairs . The rotunda area remained closed for approximately two years for these repairs . This " Spring Break Quake " shook the building enough to shift the statue on top and crack the dome . Additionally , the quake created a three-foot ( one-meter ) bulge on the west end of the building . Repairs cost $ 4.3 million ( $ as of ) and included reinforcing the structure with additional concrete and steel bars
Scotts Mills earthquake
1993 Scotts Mills earthquake
Oregon State Capitol