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This week, giant rectangular concrete tubes that were built downriver from Oak Park Heights, Minn., are beginning to be put in place. They've been hauled upriver by tugboat from a plant in Cottage Grove, and they're ready to be lined up for almost a mile across the St. Croix to St. Joseph, Wis. 

The new St. Croix Crossing bridge is scheduled to open in the fall of 2016.

For St. Croix Crossing engineers, some assembly now required

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Jeffrey Thompson

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Segments of pre-cast concrete are being hoisted onto piers over the St. Croix River.

Jeffrey Thompson | MPR News

Bridge segments are cantilevered over Hwy. 95.

Workers constructed a section of the bridge.

Photos: It's starting to look like a bridge over the St. Croix

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