Although foundation work has been complete at the St Croix Crossing project for quite some time now, MnDOT has recently posted some really amazing photos of the superstructure construction, or dome shelter of this huge bridge  on the project site and Facebook page.

The St Croix Crossing Bridge is an extradosed bridge, which is something of a cross between a segmental box girder and cable-stayed bridge.  The scale of the massive concrete segments can be seen in the picture above in comparison to the barge the segments are sitting on and some of the equipment in the background.