Cassions, Piers Complete on Footings for St. Croix River Crossing

Steel, concrete and sweat (despite the cold) have come together for a major milestone in the bridge's construction.

December may have been record-setting in terms of top 10 coldest months, but that hasn't slowed progress in the heart of the St. Croix River. 

Crews completed the 40 steps necessary to complete 10 piers, creating the foundation of the St. Croix River Crossing, last month. 

According to the Minnesota Department of Transportation, these caissons are 9-feet diameter steel casings. Crews drill them up to 140 feet below the river surface, then fill them with rebar and concrete to create solid foundations for the new bridge. Then, crews pour a concrete footing and a column at each pier location that will eventually attach to the bridge superstructure. The columns will be visible and stick up about 16 feet above the water’s surface.

Traffic on Minnesota Highway 36 has also been moved to the eastbound lane, creating head-to-head, two-lane flow in the area that approaches the bridge site. That will remain throughout the winter months. 

Check out the progress live at the St. Croix Crossing webcam.


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Roach Silverback January 02, 2014 at 09:57 PM
This is a huge republican victory! Can't wait to get home via this bridge soon!
Scuzzlebutt January 02, 2014 at 09:59 PM
But think about the poor manatees and polar bears?
Roach Silverback January 02, 2014 at 10:31 PM
I've got both species mounted on my camel pelts in my game room! I love thinking about the challenging hunt at garage sales I had to complete my trophy game room
Scuzzlebutt January 02, 2014 at 10:35 PM
Yeah... You're probably sitting in your game room in your underwear playing dungeons and dragons with your reflection in a mirror.
Roach Silverback January 02, 2014 at 10:41 PM
There is nothing wrong with fantasy games like D&D you should try it!


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