before_revision: The report created by the AASHTO titled "Bridging the Gap: Restoring and Rebuilding the Nation's Bridges" stated that nearly every one in five bridges is 50 years old or older, and that of the 600,000 U.S. bridges that nearly 152,000, or one in four, need significant repair. "Almost one in four bridges, while safe to travel, is either structurally deficient, in need of repair," according to the report . Also that the average age of American bridges is 43 years old. The report was released just  prior to the  August 1, 2007 anniversary of the I-35W bridge collapse, which resulted in the death of thirteen people.
after_revision: The report created by the AASHTO titled "Bridging the Gap: Restoring and Rebuilding the Nation's Bridges" stated that nearly every one in five bridges is 50 years old or older, and that of the 600,000 U.S. bridges that nearly 152,000, or one in four, need significant repair. "Almost one in four bridges, while safe to travel, is either structurally deficient, in need of repair," according to the report , which also says that the average age of American bridges is 43 years . The report was released just days prior to the one-year anniversary of the August 1, 2007 I-35W bridge collapse, which resulted in the death of thirteen people.
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