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Originally published August 2, 2007 at 12:00 AM | Page modified August 2, 2007 at 2:06 AM

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State says bridge had passed tests

When it opened to traffic 40 years ago, the Interstate 35W bridge in Minneapolis was hailed for its novel design: an unbroken, 458-foot...

When it opened to traffic 40 years ago, the Interstate 35W bridge in Minneapolis was hailed for its novel design: an unbroken, 458-foot arch. Engineers did not support the bridge midspan with piers or pylons that would impede barge traffic on the Mississippi River.

State inspectors evaluated the bridge for stress in March 2001 and determined it "should not have any problems with fatigue cracking in the foreseeable future." Inspectors recommended frequent inspection — as often as every six months — of the steel trusses that bore the most stress. But they concluded that the state "does not need to prematurely replace this bridge ... avoiding the high costs associated with such a large project."

Gov. Tim Pawlenty said more recent inspections, including one last year, found "no structural deficits."

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