| Question 1: The bridge was added to the ________ in 2006. | |||
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| Question 2: The Chain of Rocks Bridge spans the ________ on the north edge of St. Louis, Missouri. | |||
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| Question 3: The eastern end of the bridge is on Chouteau Island, (part of Madison, Illinois), while the western end is on the ________ shoreline. | |||
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| Question 4: The Bridge was for a time the route used by ________ to cross over the Mississippi. | |||
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