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Mt. Saint Helens: This active volcano had its last serious eruption in May, 1980, but had a minor but attention-getting eruption of ash in March 2005 (see photos in this gallery). Mt. Saint Helens was named by British explorers in 1792, after Baron St. Helens. It is only 50 miles from Portland, Oregon.
Fremont Bridge: Finished in 1973, this is Portland's newest bridge over the Willamette. The double-decked Fremont Bridge connects northbound I-405 and westbound US-30 to I-5. It weighs 6,000 tons and was lifted 170 feet - a Guinness Book of World Records entry for heaviest lift ever made at the time. The tied arch span is 902 feet long and was not built on-site but floated on the river into place. 
-  Smith, Dwight. Historic Highway Bridges of Oregon. Second
Edition. Portland, Oregon: Oregon Historical Society, 1989. P. 300.